Home ReviewsRefund
Home/Chevrolet/Corvette/Chevrolet Corvette C6 (2004-2014)/Repair manual/Mechanical/Engine Mechanical - 6.2l, or 7.0l (6 of 8)
Contents Wiring diagrams Section: Mechanical All sections

Engine Mechanical - 6.2l, or 7.0l (6 of 8) Chevrolet Corvette C6

Mechanical 4 illustrations ~11956 words

Engine Oil Cooler Disassemble

  1. Remove the oil cooler core bolts (1).
  2. Remove the oil cooler core (2).
  3. Remove the oil cooler core seals (3).
  4. Remove the coolant fitting (1), as required.
  5. Remove the coolant fitting seal (2).
  6. Discard the seal.

Engine Oil Cooler Cleaning and Inspection

  1. Inspect the oil cooler housing (2) and the oil cooler core (1) for cracks or casting imperfections.
  2. Inspect the oil cooler housing for damaged bolt hole threads.
  3. Inspect the oil cooler housing and core for damaged seal surfaces.
  4. Inspect the oil cooler core for damaged or broken cooling fins.
  5. Inspect for restrictions within the coolant passages of the core or housing.
  6. Inspect for restrictions within the oil passages of the core or housing.
  7. Inspect for a leaking coolant hose fitting (3).

Engine Oil Cooler Assemble

  1. Install a NEW coolant fitting seal (2).
  2. Install the coolant fitting (1) and tighten to 35 N.m (27 lb ft).
  3. Install the NEW oil cooler core seals (3).
  4. Install the oil cooler core (2).
  5. Install the oil cooler core bolts (1) and tighten to 25 N.m (18 lb ft).

Oil Tank Disassemble

  1. Prior to disassembly, mark the upper and lower portions of the large tank for proper reassembly. Mark the tank on the area below the oil fill cap.
  2. Remove the oil level indicator (1) and oil fill cap (2).
  3. Remove the bolts (1) and bolt/studs (2) from the large tank. Note the locations of the bolt/studs for reassembly.
  4. Separate the upper (3) and lower (5) portions of the large tank.
  5. Remove the O-ring seal (4).
  6. Remove the tube (2) from the large tank (3).
  7. Remove the O-ring (1) from the tube.
  8. Remove the screen (1) from the tank (2). Reaching inside and into the bottom of the tank, pull the screen into the tank in order to remove. The screen locking tabs may break upon removal from the oil tank. If the screen cannot be properly cleaned or has a broken locking tab, replace with a new screen.
  9. Loosen and remove the clamp (1) in order to separate the large tank from the small oil tank.
  10. Remove the retaining clips from the transfer tube fittings (2 and 4).
  11. Remove the transfer tube (3) and separate the large tank (5) from the small tank (1).
  12. Remove the fittings (2 and 4) from the tanks as required.

Oil Tank Cleaning and Inspection

  1. Clean the large and small oil tanks (1 and 2) in solvent.
  2. Clean the tube (3) in solvent. Inspect for the following: Dirt or debris Damaged seal surfaces Transfer tube fittings for damaged O-ring seals, replace as required Restrictions within the positive crankcase ventilation (PCV) tubes or oil transfer tube A dirty or restricted tube (3)
  3. Clean the screen and inspect for the following: Plugged or damaged screen (1) Broken locking tabs (2), replace as required.

Oil Tank Assemble

  1. Install the oil transfer tube fittings (2 and 4) to the large and small oil tanks and tighten to 35 N.m (26 lb ft).
  2. Assemble the transfer tube (3), large tank (5) and small tank (1).
  3. Install the clamp (1).
  4. Tighten the nut (1). With the nut of the clamp positioned so that the face of the nut is flush with the end of the bolt, rotate the nut clockwise 21 complete turns to apply tension to the clamp.
  5. Install the O-ring (1) to the tube.
  6. Install the tube (2) to the large tank (3).
  7. Install the O-ring seal (4).
  8. Assemble the upper (3) and lower (5) portions of the large tank. Aligning the markings made prior to disassembly.
  9. Inspect for proper installation of the tube to top tank. The top of the tube (2) should locate into the opening (1) in the top portion of the tank.
  10. Install the bolts (1) and bolt/studs (2) to the tank and tighten to 25 N.m (18 lb ft). Note the locations of the bolt/studs during reassembly.
  11. Install the oil level indicator (1) and oil fill cap (2).

Cleaning Procedure

  1. Remove and discard the intake manifold-to-cylinder head gaskets (514).
  2. Remove the manifold absolute pressure (MAP) sensor. Refer to «Intake Manifold Removal (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__intake-manifold-removal-62l-ls3) or «Intake Manifold Removal (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__intake-manifold-removal-70l) .
  3. Remove the evaporative emission (EVAP) canister purge solenoid valve, EVAP tubes, and fuel rail with injectors. Refer to «Fuel Rail and Injectors Removal (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__fuel-rail-and-injectors-removal-62l) or «Fuel Rail and Injectors Removal (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__fuel-rail-and-injectors-removal-62l) or «Fuel Rail and Injectors Removal (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__fuel-rail-and-injectors-removal-70l) .
  4. Remove the throttle body and gasket. Refer to «Throttle Body Removal (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__throttle-body-removal-62l-ls3) or «Throttle Body Removal (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__throttle-body-removal-62l-ls9) or «Throttle Body Removal (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__throttle-body-removal-70l) .
  5. Clean the intake manifold in solvent.
  6. Dry the intake manifold with compressed air.

Inspection Procedure

  1. Inspect the manifold for the following conditions: Lose threaded inserts (1) Damaged MAP sensor bore (2) Damaged fuel injector bore (3) Damaged gasket or sealing surfaces (4) Damaged or broken vacuum fittings (5) Debris or restrictions within the passages of the manifold Inspect the composite intake manifold assembly for cracks or other damage.
  2. Inspect the intake manifold cylinder head deck for warpage. Locate a straight edge across the intake manifold cylinder head deck surface. Position the straight edge across a minimum of 2 runner port openings. Insert a feeler gage between the intake manifold and the straight edge. An intake manifold with warpage in excess of 3 mm (0.118 in) over a 200 mm (7.87 in) area is warped and should be replaced.
  1. Remove and discard the intake manifold-to-cylinder head gaskets (514).
  2. Remove the manifold absolute pressure (MAP) sensor. Refer to «Intake Manifold Removal (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__intake-manifold-removal-62l-ls3) or «Intake Manifold Removal (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__intake-manifold-removal-70l) .
  3. Remove the evaporative (EVAP) emission canister purge solenoid valve, EVAP tubes, and fuel rail with injectors. Refer to «Fuel Rail and Injectors Removal (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__fuel-rail-and-injectors-removal-62l) or «Fuel Rail and Injectors Removal (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__fuel-rail-and-injectors-removal-62l) or «Fuel Rail and Injectors Removal (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__fuel-rail-and-injectors-removal-70l) .
  4. Remove the throttle body and gasket. Refer to «Throttle Body Removal (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__throttle-body-removal-62l-ls3) or «Throttle Body Removal (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__throttle-body-removal-62l-ls9) or «Throttle Body Removal (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__throttle-body-removal-70l) .
  5. Clean the intake manifold in solvent.
  6. Dry the intake manifold with compressed air.
  1. Inspect the manifold for the following conditions: Lose threaded inserts (1) Damaged MAP sensor bore (2) Damaged fuel injector bore (3) Damaged gasket or sealing surfaces (4) Damaged or broken vacuum fittings (5) Debris or restrictions within the passages of the manifold Inspect the composite intake manifold assembly for cracks or other damage.
  2. Inspect the intake manifold cylinder head deck for warpage. Locate a straight edge across the intake manifold cylinder head deck surface. Position the straight edge across a minimum of 2 runner port openings. Insert a feeler gage between the intake manifold and the straight edge. An intake manifold with warpage in excess of 3 mm (0.118 in) over a 200 mm (7.87 in) area is warped and should be replaced.

Supercharger Disassemble

  1. Remove the water manifold bolts (1).
  2. Remove the water manifold (2).
  3. Remove the water manifold gaskets (3).
  4. Remove the coolant pipes (2) and seals (1).
  5. Remove the seals (1) from the pipes (2) as required.
  6. Remove the charge air coolers (2), bolts (1) and insulators (3), as required.
  7. Remove the air outlet pressure sensor bolt (1).
  8. Remove the sensor (2).
  9. Remove the sensor seal (3), as required.
  10. Remove the inlet air temperature sensor (1).
  11. Remove the barometric pressure (BARO) sensor bolt (1).
  12. Remove the BARO sensor (2).
  13. Remove the BARO sensor seal (3), as required.
  14. Remove the insulator seals (1).
  15. Remove the charge air bypass valve tube (1).
  16. Remove the charge air bypass valve vacuum tube (2).
  17. Remove the inlet air pressure sensor bolt (1).
  18. Remove the inlet air pressure sensor (2).
  19. Remove the inlet air pressure sensor seal (3), as required.
  20. Loosen the evaporative emissions (EVAP) bolt.
  21. Remove the EVAP valve (1).
  22. Remove the EVAP valve seal (2), as required.
  23. Remove the bypass actuator tube (1).
  24. Remove the charge air bypass valve bolt (2).
  25. Remove the charge air bypass valve (3).
  26. Remove the bypass actuator bolts (4).
  27. Rotate the actuator downward and remove the rod from the lever of the supercharger.
  28. Remove the bypass actuator (5).
  29. Drill out the gasket rivets (1) using a drill bit with an outside diameter (OD) no larger than 3.2 mm (0.125 in).
  30. Remove the gaskets (2).

Scheme 93

Scheme 93: Charge Air Cooler Cover Cleaning and Inspection
Scheme 93: Charge Air Cooler Cover Cleaning and Inspection

Inspect the cover for the following

  1. Damaged seal surfaces (1)
  2. Leaking, restricted, or damaged charge air coolers (2, 3)

Scheme 94

Scheme 94
Scheme 94

Inspect the water manifold for the following

  1. Damaged seal surfaces (1)
  2. Leaking air bleeds (2)
  3. Leaking coolant fill adapter (3)
  4. Damaged coolant hose fitting sealing surfaces (4)

Supercharger Cleaning and Inspection

  1. Inspect the supercharger for the following: Damaged seal surfaces (1) Worn or damaged belt pulley grooves (2)
  2. Rotate the pulley of the supercharger by hand. The pulley and rotors should rotate freely with no binding.
  3. Operate the boost bypass valve by hand. The bypass valve should operate within the full range of motion with no sticking or binding.

Supercharger Assemble

  1. Install the NEW gaskets (2).
  2. Install NEW gasket rivets (1).
  3. Install the actuator adjustment tool onto the actuator. Position the raised portion of the rod in the proper position.
  4. Install the rod of the actuator into the lever of the supercharger.
  5. Rotate the actuator and install the bolts. Do not tighten the bolts at this time.
  6. Moving the actuator forward or rearward as required, ensure that the supercharger lever is in contact with the adjustment screw on the actuator and that the lever is rotated to the fully closed position.
  7. Tighten the actuator bolts to 25 N.m (18 lb ft).
  8. Remove the adjustment tool from the actuator.
  9. Rotate the adjustment screw on the actuator clockwise 1/4 turn.
  10. Install the charge air bypass valve (3).
  11. Install the charge air bypass valve bolt (2) and tighten to 10 N.m (89 lb in).
  12. Install the bypass actuator tube (1).
  13. Install a NEW evaporative emission (EVAP) valve seal (2).
  14. Install the EVAP valve (1) and tighten to 10 N.m (89 lb in).
  15. Install a NEW inlet air pressure sensor seal (3).
  16. Install the inlet air pressure sensor (2).
  17. Install the inlet air pressure sensor bolt (1) and tighten to 10 N.m (89 lb in).
  18. Install the bypass valve vacuum tube (2).
  19. Install the bypass valve tube (1).
  20. Install the NEW insulator seals (1).
  21. Install a NEW barometric pressure (BARO) sensor seal (3).
  22. Install the BARO sensor (2).
  23. Install the BARO sensor bolt (1) and tighten to 10 N.m (89 lb in).
  24. Apply a 5 mm (0.2 in) band of sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the threads of the intake air temperature (IAT) sensor.
  25. Install the IAT sensor (1) and tighten to 20 N.m (15 lb ft).
  26. Install a NEW manifold absolute pressure (MAP) sensor seal (3).
  27. Install the MAP sensor (2).
  28. Install the MAP sensor bolt (1) and tighten to 10 N.m (89 lb in).
  29. Apply a 5 mm (0.2 in) band of threadlocker GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the bolts.
  30. Install the insulators (3), charge air coolers (2) and bolts (1) and tighten to 10 N.m (89 lb in).
  31. Lubricate the NEW seals (1) with clean engine oil.
  32. Install the NEW seals (1) to the coolant pipes (2).
  33. Install the NEW water manifold gaskets (3).
  34. Install the water manifold (2).
  35. Install the water manifold bolts (1) and tighten to 10 N.m (89 lb in).

Special Tools

  1. EN-48974: Adapter Kit
  2. J 46091: Charge Air Cooler Tester For equivalent regional tools, refer to «Special Tools (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) or «Special Tools (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls9) or «Special Tools (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-70l) .

Testing Procedure

  1. Rotate the regulator knob (3) counterclockwise until stop to reduce pressure to 0 kPa (0 psi).
  2. Connect the J 46091-1 to a shop air source (1).
  3. Install the EN-48974: Kit adapter hose (1), cap (2) and clamps (3) to the coolant inlet and outlet connections of the intercooler water manifold. Tighten the clamps until snug.
  4. Install the J 46091-1 to the EN-48974: Kit adapter hose.
  5. Rotate the knob of the regulator slowly clockwise to increase pressure.
  6. With the intercooler pressurized to 69 kPa (10 psi) maximum, close the air inlet valve of the J 46091-1.
  7. Inspect for a drop in air pressure on the gage. If a drop in pressure is noted, inspect for leaks at the tool connections, the charge air coolers, service bleed ports, assembly plant fill port, and water manifold-to-charge air cooler seal locations. If no drop in pressure is noted, the intercooler can be installed onto the engine assembly.

Exhaust Manifold Cleaning and Inspection (6.2L LS3)

  1. Clean the exhaust manifold (600) and heat shield (603) in solvent.
  2. Dry the exhaust manifold with compressed air.
  3. Inspect the exhaust manifold-to-cylinder head gasket surface for excessive scratches or gouging.
  4. Inspect for a loose, damaged, or cracked heat shield (603).
  5. Inspect the exhaust pipe studs (605) for damaged threads.
  6. Use a straight edge and a feeler gage and measure the exhaust manifold cylinder head deck for warpage. An exhaust manifold deck with warpage in excess of 0.25 mm (0.01 in) within the 2 front or 2 rear runners or 0.5 mm (0.02 in) overall, may cause an exhaust leak and may effect OBD II system performance. Exhaust manifolds not within specifications must be replaced.

Exhaust Manifold Cleaning and Inspection (6.2L LS9)

  1. Clean the exhaust manifold (1) and heat shield (2) in solvent.
  2. Dry the exhaust manifold with compressed air.
  3. Inspect the exhaust manifold-to-cylinder head gasket surface for excessive scratches or gouging.
  4. Inspect for a loose, damaged, or cracked heat shield (2).
  5. Inspect the exhaust pipe studs (3) for damaged threads.
  6. Use a straight edge and a feeler gage to measure the exhaust manifold cylinder head deck for warpage. An exhaust manifold deck with warpage in excess of 0.25 mm (0.01 in) within the 2 front or 2 rear runners or 0.5 mm (0.02 in) overall, may cause an exhaust leak and may effect OBD II system performance. Exhaust manifolds not within specifications must be replaced.

Exhaust Manifold Cleaning and Inspection (7.0L)

  1. Clean the exhaust manifold (600) and heat shield (603) in solvent.
  2. Dry the exhaust manifold with compressed air.
  3. Inspect the exhaust manifold-to-cylinder head gasket surface for excessive scratches or gouging.
  4. Inspect for a loose, damaged, or cracked heat shield (603).
  5. Inspect the exhaust pipe studs (605) for damaged threads.
  6. Use a straight edge and a feeler gage to measure the exhaust manifold cylinder head deck for warpage. An exhaust manifold deck with warpage in excess of 0.25 mm (0.01 in) within the 2 front or 2 rear runners or 0.5 mm (0.02 in) overall, may cause an exhaust leak and may effect OBD II system performance. Exhaust manifolds not within specifications must be replaced.

Engine Coolant Air Bleed Pipe and Hole Cover Cleaning and Inspection (6.2L LS3)

  1. Remove the seals (308) from the pipe.
  2. Clean the pipe in solvent.
  3. Dry the pipe with compressed air.
  4. Inspect the pipe for damaged sealing surfaces (1, 2) or restrictions within the pipe (3).

Engine Coolant Air Bleed Pipe and Hole Cover Cleaning and Inspection (6.2L LS9)

  1. Remove the seals (1) from the pipes.
  2. Clean the pipes in solvent.
  3. Dry the pipes with compressed air.
  4. Inspect the pipes for damaged sealing surfaces (1, 2) or restrictions within the pipe (3).

Engine Coolant Air Bleed Pipe and Hole Cover Cleaning and Inspection (7.0L)

  1. Remove the seals (308) from the pipe.
  2. Clean the pipe in solvent.
  3. Dry the pipe with compressed air.
  4. Inspect the pipe for damaged sealing surfaces (1, 2) or restrictions within the pipe (3).

Water Pump Cleaning and Inspection (6.2L LS3)

  1. Remove the old gasket from the water pump sealing surfaces. Refer to «Replacing Engine Gaskets»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8) .
  2. Clean all excess dirt and debris from the water pump housing.
  3. Inspect the water pump (1) for the following conditions: Gasket and hose sealing surfaces for excessive scratches or gouging Restrictions within the internal coolant passages Excessive side-to-side play in the pulley shaft Leakage at the water outlet housing or rear cover gasket Leakage at the water pump vent hole A stain around the vent hole is acceptable. If leakage, dripping, occurs with the engine running and the cooling system pressurized, replace the water pump. Wear or damage in the belt tracking area of the pulley

Water Pump Cleaning and Inspection (6.2L LS9)

  1. Remove the old gasket (2) from the water pump sealing surfaces. Refer to «Replacing Engine Gaskets»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8) .
  2. Clean all excess dirt and debris from the water pump housing.
  3. Inspect the water pump (1) for the following conditions: Gasket and hose sealing surfaces for excessive scratches or gouging Restrictions within the internal coolant passages Excessive side-to-side play in the pulley shaft Leakage at the water outlet housing or rear cover Leakage at the water pump vent hole A stain around the vent hole is acceptable. If leakage, dripping, occurs with the engine running and the cooling system pressurized, replace the water pump. Wear or damage in the belt tracking area of the pulley

Water Pump Cleaning and Inspection (7.0L)

  1. Remove the old gasket (306) from the water pump sealing surfaces. Refer to «Replacing Engine Gaskets»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8) .
  2. Clean all excess dirt and debris from the water pump housing.
  3. Inspect the water pump (300) for the following conditions: Gasket and hose sealing surfaces for excessive scratches or gouging Restrictions within the internal coolant passages Excessive side-to-side play in the pulley shaft Leakage at the water outlet housing or rear cover Leakage at the water pump vent hole A stain around the vent hole is acceptable. If leakage, dripping, occurs with the engine running and the cooling system pressurized, replace the water pump. Wear or damage in the belt tracking area of the pulley
  1. J 42385-100: Head/Main Bolt Thread Repair Kit
  2. J 42385-200: Common Thread Repair Kit
  3. J 42385-300: Fixtures and Hardware Kit

Scheme 95

Scheme 95: General Thread Repair
Scheme 95: General Thread Repair

The thread repair process involves a solid, thin walled, self-locking, carbon steel, bushing type insert (1). During the bushing installation process, the driver tool expands the bottom external threads of the insert into the base material (2). This action mechanically locks the insert in place. Also, when installed to the proper depth, the flange of the insert will be seated against the counterbore of the repaired hole.

  1. Drill out the threads of the damaged hole (1). M6 inserts require a minimum drill depth of 15 mm (0.59 in). M8 inserts require a minimum drill depth of 20 mm (0.79 in). M10 inserts require a minimum drill depth of 23.5 mm (0.93 in).
  2. Using compressed air, clean out any chips.
  3. Counterbore the hole to the full depth permitted by the tool (1).
  4. Using compressed air, clean out any chips.
  5. Using a tap wrench (2), tap the threads of the drilled hole. M6 inserts require a minimum tap depth of 15 mm (0.59 in). M8 inserts require a minimum tap depth of 20 mm (0.79 in). M10 inserts require a minimum tap depth of 23.5 mm (0.93 in).
  6. Using compressed air, clean out any chips.
  7. Spray cleaner GM P/N 12346139, GM P/N 12377981 (Canadian P/N 10953463), or equivalent, into the hole.
  8. Using compressed air, clean any cutting oil and chips out of the hole.
  9. Lubricate the threads of the installer tool (2) with the driver oil (1).
  10. Install the insert (2) onto the driver tool (1).
  11. Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD threads (2).
  12. Install the insert (2) into the hole. Install the insert until the flange of the insert contacts the counterbored surface. Continue to rotate the installer tool (1) through the insert. The installer tool will tighten up before screwing completely through the insert. This is acceptable. You are forming the bottom threads of the insert and mechanically locking the insert to the base material threads.
  13. Inspect the insert for proper installation into the hole. A properly installed insert (1) will be either flush or slightly below flush with the surface of the base material (2).

Cylinder Head Bolt Hole Thread Repair

  1. The cylinder head bolt hole thread repair kit consists of the following items: The drill (1) The tap (2) The installer (3) The sleeve (4) The alignment pin (5) The bushing (6) The bolts (7) The fixture plate (8)
  2. Install the fixture plate (3), bolts (1), and bushing (2) onto the engine block deck. Position the fixture plate and bushing over the hole that is to be repaired (4).
  3. Position the alignment pin (1) through the bushing and into the hole.
  4. With the alignment pin in the desired hole, tighten the fixture retaining bolts (2).
  5. Remove the alignment pin from the hole.
  6. Install the sleeve (2) onto the drill (1).
  7. Drill out the threads of the damaged hole. Drill the hole until the stop collar of the drill bit or the sleeve contacts the bushing.
  8. Using compressed air, clean out any chips.
  9. Using a tap wrench, tap the threads of the drilled hole.
  10. In order to tap the new threads to the proper depth, rotate the tap into the hole until the mark (1) on the tap aligns with the top of the drill bushing (3).
  11. Remove the fixture plate (2), bushing (3), and bolts.
  12. Using compressed air, clean out any chips.
  13. Spray cleaner GM P/N 12346139, GM P/N 12377981 (Canadian P/N 10953463), or equivalent, into the hole.
  14. Using compressed air, clean any cutting oil and chips out of the hole.
  15. Lubricate the threads of the installer tool (2) with the driver oil (1).
  16. Install the insert (2) onto the driver tool (1).
  17. Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD threads (2).
  18. Install the insert and driver (1) into the hole. Rotate the driver tool until the mark on the tool aligns with the deck surface of the engine block. The installer tool will tighten up before screwing completely through the insert. This is acceptable. You are forming the bottom threads of the insert and mechanically locking the insert to the base material threads.

Main Cap Bolt Hole Thread Repair

  1. The main cap bolt hole thread repair kit consists of the following items: The drill (1) The tap (2) The installer (3) The fixture plate (4) The long bolts (5) The short bolts (6) The alignment pin (7) The bushing (8)
  2. Install the fixture plate, bolt, and bushing onto the engine block. Position the fixture plate and bushing over the hole that is to be repaired.
  3. Position the alignment pin in the desired hole and tighten the fixture retaining bolts.
  4. Drill out the damaged hole. The outer bolt hole locations 11-20 have the shallower counterbores. Use sleeve J 42385-316 with the drill. Drill until the stop collar of the drill bit or the sleeve contacts the bushing.
  5. Using compressed air, clean out any chips.
  6. Using a tap wrench, tap the threads of the drilled hole. In order to tap the new threads to the proper depth, rotate the tap into the hole until the mark on the tap aligns with the top of the bushing. For the deeper main cap holes 1-10, rotate the tap until the upper mark (4) on the tap aligns with the top of the bushing (3). For the shallower main cap holes 11-20, rotate the tap until the lower mark (1) on the tap aligns with top of the bushing (3).
  7. Using compressed air, clean out any chips.
  8. Spray cleaner GM P/N 12346139 (Canadian P/N 10953463), or equivalent, into the hole.
  9. Using compressed air, clean any cutting oil and chips out of the hole.
  10. Lubricate the threads of the installer tool (2) with the driver oil (1).
  11. Install the insert (2) onto the driver tool (1).
  12. Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD threads (2).
  13. Install the insert and driver (1) through the fixture plate and bushing and into the hole. Rotate the driver tool until the mark on the tool (3) aligns with the top of the bushing (2). The installer tool will tighten up before screwing completely through the insert. This is acceptable. You are forming the bottom threads of the insert and mechanically locking the insert to the base material threads.
  1. J 42385-100: Head/Main Bolt Thread Repair Kit
  2. J 42385-200: Common Thread Repair Kit
  3. J 42385-300: Fixtures and Hardware Kit

General Thread Repair

The thread repair process involves a solid, thin walled, self-locking, carbon steel, bushing type insert (1). During the bushing installation process, the driver tool expands the bottom external threads of the insert into the base material (2). This action mechanically locks the insert in place. Also, when installed to the proper depth, the flange of the insert will be seated against the counterbore of the repaired hole.

  1. Drill out the threads of the damaged hole (1). M6 inserts require a minimum drill depth of 15 mm (0.59 in). M8 inserts require a minimum drill depth of 20 mm (0.79 in). M10 inserts require a minimum drill depth of 23.5 mm (0.93 in).
  2. Using compressed air, clean out any chips.
  3. Counterbore the hole to the full depth permitted by the tool (1).
  4. Using compressed air, clean out any chips.
  5. Using a tap wrench (2), tap the threads of the drilled hole. M6 inserts require a minimum tap depth of 15 mm (0.59 in). M8 inserts require a minimum tap depth of 20 mm (0.79 in). M10 inserts require a minimum tap depth of 23.5 mm (0.93 in).
  6. Using compressed air, clean out any chips.
  7. Spray cleaner GM P/N 12346139, GM P/N 12377981 (Canadian P/N 10953463), or equivalent, into the hole.
  8. Using compressed air, clean any cutting oil and chips out of the hole.
  9. Lubricate the threads of the installer tool (2) with the driver oil (1).
  10. Install the insert (2) onto the driver tool (1).
  11. Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD threads (2).
  12. Install the insert (2) into the hole. Install the insert until the flange of the insert contacts the counterbored surface. Continue to rotate the installer tool (1) through the insert. The installer tool will tighten up before screwing completely through the insert. This is acceptable. You are forming the bottom threads of the insert and mechanically locking the insert to the base material threads.
  13. Inspect the insert for proper installation into the hole. A properly installed insert (1) will be either flush or slightly below flush with the surface of the base material (2).
IMPORTANTThe 6.2L LS9 cylinder head bolt holes are of a M12 x 1.75 design and are not serviceable using the service repair kit. If the cylinder head bolt hole threads are damaged, a new engine block is required.
  1. The main cap bolt hole thread repair kit consists of the following items: The drill (1) The tap (2) The installer (3) The fixture plate (4) The long bolts (5) The short bolts (6) The alignment pin (7) The bushing (8)
  2. Install the fixture plate, bolt, and bushing onto the engine block. Position the fixture plate and bushing over the hole that is to be repaired.
  3. Position the alignment pin in the desired hole and tighten the fixture retaining bolts.
  4. Drill out the damaged hole. The outer bolt hole locations 11-20 have the shallower counterbores. Use sleeve J 42385-316 with the drill. Drill until the stop collar of the drill bit or the sleeve contacts the bushing.
  5. Using compressed air, clean out any chips.
  6. Using a tap wrench, tap the threads of the drilled hole. In order to tap the new threads to the proper depth, rotate the tap into the hole until the mark on the tap aligns with the top of the bushing. For the deeper main cap holes 1-10, rotate the tap until the upper mark (4) on the tap aligns with the top of the bushing (3). For the shallower main cap holes 11-20, rotate the tap until the lower mark (1) on the tap aligns with top of the bushing (3).
  7. Using compressed air, clean out any chips.
  8. Spray cleaner GM P/N 12346139 (Canadian P/N 10953463), or equivalent, into the hole.
  9. Using compressed air, clean any cutting oil and chips out of the hole.
  10. Lubricate the threads of the installer tool (2) with the driver oil (1).
  11. Install the insert (2) onto the driver tool (1).
  12. Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD threads (2).
  13. Install the insert and driver (1) through the fixture plate and bushing and into the hole. Rotate the driver tool until the mark on the tool (3) aligns with the top of the bushing (2). The installer tool will tighten up before screwing completely through the insert. This is acceptable. You are forming the bottom threads of the insert and mechanically locking the insert to the base material threads.

Service Prior to Assembly

  1. Dirt or debris causes premature wear of the rebuilt engine. Clean all components. Refer to «Cleanliness and Care»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__cleanliness-and-care) .
  2. Use the proper tools to measure components when inspecting for excessive wear. Components that are not within the manufacturers specifications must be repaired or replaced.
  3. When the components are installed into an engine, return the components to their original location, position and direction. Refer to «Separating Parts»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__separating-parts) .
  4. During assembly, lubricate all moving parts with clean engine oil. This provides initial lubrication when the engine is first started.

Engine Block Plug Installation

  1. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the threads of the engine oil cooler coolant fitting (2). Refer to «Adhesives, Fluids, Lubricants, and Sealers (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-62l) or «Adhesives, Fluids, Lubricants, and Sealers (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-62l) or «Adhesives, Fluids, Lubricants, and Sealers (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-70l) .
  2. Install the engine oil cooler coolant fitting (2) and tighten to 50 N.m (37 lb ft).
  3. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine block right rear coolant drain hole plug sealing washer.
  4. Install the engine block right rear coolant drain hole plug and tighten to 60 N.m (44 lb ft).
  5. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine block left front oil gallery plug sealing washer (117).
  6. Install the engine block left front oil gallery plug (116) and tighten to 60 N.m (44 lb ft).
  7. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine block left rear oil gallery plug sealing washer (113).
  8. Install the engine block left rear oil gallery plug (112) and tighten to 60 N.m (44 lb ft).
  9. Inspect the engine block rear oil gallery plug and O-ring seal. If the O-ring seal on the plug is not cut or damaged, the rear oil gallery plug may be used again.
  10. Lubricate the O-ring seal with clean engine oil.
  11. Install the O-ring seal onto the plug.
  12. Install the engine block rear oil gallery plug into the oil gallery bore. A properly installed block plug will protrude 0.8-1.4 mm (0.0315-0.055 in) beyond the rear face of the block.
  13. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) to the sides of the NEW front oil gallery plug (101).
  14. Install a NEW engine block front oil gallery plug. Install the plug into the oil gallery bore 2.2-2.8 mm (0.0086-0.011 in) below flush.
  15. Install the left side knock sensor (1) and bolt (2) and tighten to 25 N.m (18 lb ft).
  16. Install the right side knock sensor (718) and bolt (739) and tighten to 25 N.m (18 lb ft).
  17. Install the piston oil nozzles (1) to the block - 6.2L LS9/LSA.
  18. Tighten the bolts to 20 N.m (15 lb ft).

J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

Installation Procedure

  1. Install the crankshaft bearings to the engine block and bearing caps. The thrust bearings are to be installed into center journal.
  2. Lubricate the bearing surfaces and crankshaft journals with clean engine oil.
  3. Install the crankshaft.
  4. Install the crankshaft bearing caps, with bearings, into the engine block.
  5. Install the M10 bolts (129) and studs (128).
  6. Using a plastic-face hammer, tap the bearing caps into place.
  7. Install the NEW M8 bearing cap side bolts (127).
  8. Tighten the bearing cap M10 bolts (1-10). Tighten the M10 bearing cap bolts (1-10) a first pass in sequence to 20 N.m (15 lb ft).
  9. Using a plastic-face hammer, tap the crankshaft rearward, then forward in order to align the thrust bearings. Tighten the M10 bolts (1-10) a final pass in sequence 80 degrees using the J 45059: meter. Tighten the M10 studs (11-20) a first pass in sequence to 20 N.m (15 lb ft). Tighten the M10 studs (11-20) a final pass in sequence 51 degrees using the J 45059: meter. Tighten the bearing cap side M8 bolts to 25 N.m (18 lb ft). Tighten the bolt on 1 side of the bearing cap and then tighten the bolt on the opposite side of the same bearing cap.
  10. Install the CKP sensor. Inspect the CKP sensor O-ring seal (750). If the O-ring seal is not cut or damaged, it may be used again. Coat the O-ring seal with clean engine oil. Install the O-ring onto the sensor. Install the sensor (701). Rotate the sensor until the locating hole in the bracket aligns with the bolt hole in the block. Install the sensor bolt (702) and tighten to 25 N.m (18 lb ft).
  11. Measure the crankshaft end play. Thrust the crankshaft forward or rearward. Insert a feeler gage between the center crankshaft bearing and the bearing surface of the crankshaft and measure the bearing clearance. The proper crankshaft end play clearance is 0.04-0.2 mm (0.0015-0.0078 in). If the bearing clearance is not within specifications, inspect the thrust surfaces for nicks, gouges or raised metal. Minor imperfections may be removed with a fine stone.
  1. J 8037: Piston Ring Compressor
  2. J 8087: Cylinder Bore Gage
  3. J 41556: Connecting Rod Guide
  4. J 45059: Angle Meter

Piston Selection

  1. With a micrometer at a right angle, measure the piston outside diameter (OD). Measure the diameter 43 mm (1.69 in) from the top of the piston. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .
  2. Record the piston OD.
  3. Adjust the micrometer to the recorded piston OD.
  4. Insert the J 8087: gage into the micrometer and zero the gage dial.
  5. Using the J 8087: gage, measure the cylinder bore inside diameter (ID). Measure at a point 64 mm (2.5 in) from the top of the cylinder.
  6. Record the cylinder bore ID.
  7. Subtract the piston OD from the cylinder bore ID in order to determine the piston-to-bore clearance. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .
  8. If the proper clearance cannot be obtained, select another piston and pin assembly and measure the clearances again. If the proper fit cannot be obtained, the cylinder bore may require honing for an oversize piston.

Scheme 96

Scheme 96: Piston, Pin, and Connecting Rod Installation
Scheme 96: Piston, Pin, and Connecting Rod Installation
  1. Lubricate the following components with clean engine oil: Piston Piston rings Cylinder bore Bearings and bearing surfaces
  2. Install the bearings to the connecting rod and cap.
  3. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
  4. Position the compression ring end gaps 180 degrees opposite each other.
  5. Install the J 41556: guide to the connecting rod.
  6. Identify the proper installation direction of the piston and connecting rod assembly. When installing the piston and connecting rod assembly, the mark on the top of the piston (1) and the tab (2) on the side of the connecting rod should face the front of the engine.
  7. Install the J 8037: compressor onto the piston and compress the piston rings.
  8. Install the piston, pin, and connecting rod assembly into the cylinder bore. Hold the piston ring compressor firmly against the engine block. Using a wooden hammer handle, lightly tap the top of the piston until all piston rings have entered the cylinder bore.
  9. Use the J 41556: guide to guide the connecting rod onto the crankshaft journal.
  10. Remove the J 41556: guide from the connecting rod. CAUTION: Refer to «Fastener Caution»(/chevrolet/corvette/c6-2004-2014/remont/oem-general-information/#dangers-warnings-and-cautions__fastener-caution) . NOTE: The connecting rod and cap must be assembled with the mating surfaces properly aligned. Install the bearing cap (103), bearing (104), and bolts (102). Tighten the bolts a first pass to 20 N.m (15 lb ft). Tighten the bolts a final pass to 85 degrees using the J 45059: meter.
  11. Measure the connecting rods for the proper side clearance. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .
  1. J 8037: Piston Ring Compressor
  2. J 8087: Cylinder Bore Gage
  3. J 41556: Connecting Rod Guide
  4. J 45059: Angle Meter
  1. With a micrometer at a right angle, measure the piston outside diameter (OD). Measure the diameter 43 mm (1.69 in) from the top of the piston. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .
  2. Record the piston OD.
  3. Adjust the micrometer to the recorded piston OD.
  4. Insert the J 8087: Gage into the micrometer and zero the gage dial.
  5. Using the J 8087: Gage, measure the cylinder bore inside diameter (ID). Measure at a point 64 mm (2.5 in) from the top of the cylinder.
  6. Record the cylinder bore ID.
  7. Subtract the piston OD from the cylinder bore ID in order to determine the piston-to-bore clearance. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .
  8. If the proper clearance cannot be obtained, select another piston and pin assembly and measure the clearances again. If the proper fit cannot be obtained, the cylinder bore may require honing for an oversize piston.

Piston, Pin, and Connecting Rod Installation

  1. Lubricate the following components with clean engine oil: Piston Piston rings Cylinder bore Bearings and bearing surfaces
  2. Install the bearings to the connecting rod and cap.
  3. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
  4. Position the compression ring end gaps 180 degrees opposite each other.
  5. Install the J 41556: Guide to the connecting rod.
  6. Identify the proper installation direction of the piston and connecting rod assembly. When installing the piston and connecting rod assembly, the mark on the top of the piston (1) and the dimple (2) on the side of the connecting rod should face the front of the engine.
  7. Install the J 8037: Compressor onto the piston and compress the piston rings.
  8. Install the piston, pin, and connecting rod assembly into the cylinder bore. Hold the piston ring compressor firmly against the engine block. Using a wooden hammer handle, lightly tap the top of the piston until all piston rings have entered the cylinder bore.
  9. Use the J 41556: Guide to guide the connecting rod onto the crankshaft journal.
  10. Remove the J 41556: Guide from the connecting rod.
  11. Install the bearing cap (103), bearing (104), and bolts (102).
  12. Tighten the bolts a first pass to 20 N.m (15 lb ft).
  13. Tighten the bolts a final pass to 110 degrees using the J 45059: Meter.
  14. Measure the connecting rods for the proper side clearance. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .
  1. J 8037: Piston Ring Compressor
  2. J 8087: Cylinder Bore Gage
  3. J 41556: Connecting Rod Guide
  4. J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. With a micrometer at a right angle, measure the piston outside diameter (OD). Measure the diameter 43 mm (1.69 in) from the top of the piston. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .
  2. Record the piston OD.
  3. Adjust the micrometer to the recorded piston OD.
  4. Insert the J 8087: gage into the micrometer and zero the gage dial.
  5. Using the J 8087: gage, measure the cylinder bore inside diameter (ID). Measure at a point 64 mm (2.5 in) from the top of the cylinder.
  6. Record the cylinder bore ID.
  7. Subtract the piston OD from the cylinder bore ID in order to determine the piston-to-bore clearance. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .
  8. If the proper clearance cannot be obtained, select another piston and pin assembly and measure the clearances again. If the proper fit cannot be obtained, the cylinder bore may require honing for an oversize piston.
  1. Lubricate the following components with clean engine oil: Piston Piston rings Cylinder bore Bearings and bearing surfaces
  2. Install the bearings to the connecting rod and cap.
  3. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
  4. Position the compression ring end gaps 180 degrees opposite each other.
  5. Install the J 41556: guide to the connecting rod.
  6. Identify the proper installation direction of the piston and connecting rod assembly. When installing the piston and connecting rod assembly, the mark on the top of the piston (1) and the tab (2) on the side of the connecting rod should face the front of the engine.
  7. Install the J 8037: compressor onto the piston and compress the piston rings.
  8. Install the piston, pin, and connecting rod assembly into the cylinder bore. Hold the piston ring compressor firmly against the engine block. Using a wooden hammer handle, lightly tap the top of the piston until all piston rings have entered the cylinder bore.
  9. Use the J 41556: guide to guide the connecting rod onto the crankshaft journal.
  10. Remove the J 41556: guide from the connecting rod.
  11. Install the bearing cap (103), bearing (104), and bolts (102). Tighten the bolts a first pass to 20 N.m (15 lb ft). Tighten the bolts a final pass to 85 degrees using the J 45059: meter.
  12. Measure the connecting rods for the proper side clearance. Refer to «Engine Mechanical Specifications (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls3) or «Engine Mechanical Specifications (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-62l-ls9) or «Engine Mechanical Specifications (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__engine-mechanical-specifications-70l) .

Camshaft Installation (6.2L LS3)

  1. Lubricate the camshaft journals and the bearings with clean engine oil.
  2. Install the camshaft sprocket bolt into the camshaft front bolt hole.
  3. Using the bolt as a handle, carefully install the camshaft into the engine block.
  4. Remove the bolt from the front of the camshaft.
  5. Install the camshaft retainer (203) and the bolts (204). Install the retainer with the sealing gasket facing the front of the engine block.
  6. Tighten the camshaft retainer bolts. Tighten the first design hex head bolts (3) to 25 N.m (18 lb ft). Tighten the second design TORX® head bolts (4) to 15 N.m (11 lb ft).

Camshaft Installation (6.2L LS9)

  1. Lubricate the camshaft journals and the bearings with clean engine oil.
  2. Install 3 M8 - 1.25 x 100 mm (M8 - 1.25 x 4.0 in) bolts into the camshaft front bolt holes.
  3. Using the bolts as a handle, carefully install the camshaft into the engine block.
  4. Remove the 3 bolts from the front of the camshaft.
  5. Install the camshaft retainer (203) and the bolts (204). Install the retainer with the sealing gasket facing the front of the engine block.
  6. Tighten the camshaft retainer bolts. Tighten the first design hex head bolts (3) to 25 N.m (18 lb ft). Tighten the second design TORX® head bolts (4) to 15 N.m (11 lb ft).

Camshaft Installation (7.0L)

  1. Lubricate the camshaft journals and the bearings with clean engine oil.
  2. Install 3 M8 - 1.25 x 100 mm (M8 - 1.25 x 4.0 in) bolts into the camshaft front bolt holes.
  3. Using the bolts as a handle, carefully install the camshaft into the engine block.
  4. Remove the 3 bolts from the front of the camshaft.
  5. Install the camshaft retainer (203) and the bolts (204). Install the retainer with the sealing gasket facing the front of the engine block.
  6. Tighten the camshaft retainer bolts. Tighten the first design hex head bolts (3) to 25 N.m (18 lb ft). Tighten the second design TORX® head bolts (4) to 15 N.m (11 lb ft).
  1. EN 46330: Timing Belt Tensioner Retaining Pin
  2. J 41478: Crankshaft Front Oil Seal Installer
  3. J 41665: Crankshaft Balancer and Sprocket Installer
  4. J 42386-A: Flywheel Holding Tool
  5. J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. Install the key into the crankshaft keyway, if previously removed.
  2. Tap the key (122) into the keyway until both ends of the key bottom onto the crankshaft.
  3. Install the crankshaft sprocket (207) onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.
  4. Use the J 41478: installer (1) and the J 41665: installer (2) in order to install the crankshaft sprocket. Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.
  5. Rotate the crankshaft sprocket until the alignment mark is in the 12 o'clock position.
  6. Compress the timing chain tensioner guide and install the EN 46330: pin.
  7. Install the timing chain tensioner (232) and bolts (231). Tighten the timing chain tensioner bolts to 25 N.m (18 lb ft).
  8. Install the camshaft sprocket (205), timing chain (208), and bolt (206).
  9. Inspect the sprockets for proper alignment. The mark on the camshaft sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
  10. Remove the EN 46330: pin.
  11. Temporarily install the automatic transmission flex plate or manual transmission flywheel and bolts. Refer to «Engine Flywheel Installation (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-7-of-8__engine-flywheel-installation-62l-ls3) or «Engine Flywheel Installation (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-7-of-8) or «Engine Flywheel Installation (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-7-of-8) .
  12. Install the J 42386-A: holding tool and bolts. Use 1 M10-1.5 x 120 mm bolt and 1 M10-1.5 x 45 mm bolt for proper tool operation. Tighten the J 42386-A: holding tool bolts to 50 N.m (37 lb ft).
  13. Tighten the camshaft sprocket bolt. Tighten the camshaft sprocket bolt a first pass to 75 N.m (55 lb ft). . Tighten the camshaft sprocket bolt a final pass an additional 50 degrees using the J 45059. meter.
  14. Remove the J 42386-A: holding tool and bolts.
  15. Remove the automatic transmission flex plate or manual transmission flywheel and bolts. Refer to «Engine Flywheel Removal (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__engine-flywheel-removal-62l-ls3) or «Engine Flywheel Removal (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__engine-flywheel-removal-62l-ls9) or «Engine Flywheel Removal (7.0L LS7)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-3-of-8__engine-flywheel-removal-70l-ls7) .
  1. EN-47812: Installer Bolt
  2. J 41665: Crankshaft Balancer and Sprocket Installer For equivalent regional tools, refer to «Special Tools (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) or «Special Tools (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls9) or «Special Tools (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-70l)
  1. Install the key into the crankshaft keyway, if previously removed.
  2. Tap the key (122) into the keyway until both ends of the key bottom onto the crankshaft.
  3. Install the crankshaft sprocket (207) onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.
  4. Use the EN-47812: bolt (1) and the J 41665: installer (2) in order to install the crankshaft sprocket. Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.
  5. Rotate the crankshaft sprocket until the alignment mark is in the 12 o'clock position.
  6. Install the timing chain tensioner (2) and bolts (1) and tighten to 25 N.m (18 lb ft).
  7. Install the camshaft sprocket (2) and timing chain (3). If necessary, rotate the camshaft or crankshaft sprockets in order to align the timing marks.
  8. Inspect the sprockets for proper alignment. The mark on the camshaft sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
  9. Install the camshaft sprocket bolts and tighten to 30 N.m (22 lb ft).
  1. EN-47812: Installer Bolt
  2. J 41665: Crankshaft Balancer and Sprocket Installer

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. Install the key into the crankshaft keyway, if previously removed.
  2. Tap the key (122) into the keyway until both ends of the key bottom onto the crankshaft.
  3. Install the crankshaft sprocket (207) onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.
  4. Use the EN-47812: bolt (1) and the J 41665: installer (2) in order to install the crankshaft sprocket. Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.
  5. Rotate the crankshaft sprocket until the alignment mark is in the 12 o'clock position.
  6. Install the timing chain dampener (232) and bolts (231) and tighten bolts to 25 N.m (18 lb ft).
  7. Install the camshaft sprocket (205) and timing chain (208). If necessary, rotate the camshaft or crankshaft sprockets in order to align the timing marks.
  8. Inspect the sprockets for proper alignment. The mark on the camshaft sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
  9. Install the camshaft sprocket bolts and tighten to 25 N.m (18 lb ft).

Oil Pump, Screen and Crankshaft Oil Deflector Installation (6.2L LS3)

  1. Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump (413).
  2. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
  3. Install the oil pump bolts (411) and tighten to 25 N.m (18 lb ft).
  4. Install the crankshaft oil deflector.
  5. Lubricate a NEW oil pump screen O-ring seal (406) with clean engine oil.
  6. Install the NEW O-ring seal onto the oil pump screen.
  7. Install the oil pump screen (407).
  8. Install the oil pump screen bolt (405) and the deflector nut (404). Tighten the oil pump screen bolt to 12 N.m (106 lb in). Tighten the crankshaft oil deflector nut to 25 N.m (18 lb ft).

J 41480: Front and Rear Cover Alignment

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. Align the splines of the crankshaft sprocket and the oil pump drive gears, and install the oil pump (413).
  2. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
  3. Install the oil pump bolts (411). Do not tighten the bolts at this time.
  4. Align the oil pump surfaces (1) with the engine block surfaces (2). The oil pump must be aligned flush or no greater than 0.1 mm (0.04 in) below the engine block oil pan rail.
  5. Install the J 41480: cover alignment and bolts to the engine block. Tighten the J 41480: cover alignment bolts to 25 N.m (18 lb ft).
  6. Firmly push the oil pump until the pump surfaces contact the J 41480: cover alignment. Continue to retain the pump to the J 41480: cover alignment. Tighten the oil pump bolts to 25 N.m (18 lb ft).
  7. Install the crankshaft oil deflector (425) and nuts (403). Install the deflector onto the engine with the word "Rear" at the back of the engine block. Tighten the crankshaft oil deflector nuts to 25 N.m (18 lb ft).

J 41480: Front and Rear Cover Alignment

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. Align the splines of the crankshaft sprocket and the oil pump drive gears, and install the oil pump (413).
  2. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
  3. Install the oil pump bolts (411). Do not tighten the bolts at this time.
  4. Align the oil pump surfaces (1) with the engine block surfaces (2). The oil pump must be aligned flush or no greater than 0.1 mm (0.04 in) below the engine block oil pan rail.
  5. Install the J 41480: cover alignment and bolts to the engine block. Tighten the J 41480: cover alignment bolts to 25 N.m (18 lb ft).
  6. Firmly push the oil pump until the pump surfaces contact the J 41480: cover alignment. Continue to retain the pump to the J 41480: cover alignment. Tighten the oil pump bolts to 25 N.m (18 lb ft).
  7. Install the crankshaft oil deflector (425) and nuts (403). Install the deflector onto the engine with the word "Rear" at the back of the engine block. Tighten the crankshaft oil deflector nuts to 25 N.m (18 lb ft).
  1. J 41476: Front and Rear Cover Alignment Tool
  2. J 41479-2A: Crankshaft Rear Oil Seal Installation Guide
  3. J 41480: Front and Rear Cover Alignment
  1. Inspect the rear housing to identify for alignment tabs (1).
  2. Inspect the rear oil gallery plug for proper installation.
  3. Install the J 41479-2A: guide cone and bolts onto the rear of the crankshaft.
  4. Tighten the bolts until snug. Do not overtighten.
  5. Install the rear housing gasket (1), rear housing with seal (2), and bolts (3).
  6. Tighten the bolts finger tight. Do not overtighten.
  7. Remove the J 41479-2A: guide and bolts.
  8. Install the J 41480: cover alignment and bolts. Tighten the tool-to-engine block bolts to 25 N.m (18 lb ft). Tighten the J 41480: cover alignment tool-to-rear housing bolts evenly to 12 N.m (106 lb in). Tighten the rear housing-to-engine block bolts to 30 N.m (22 lb ft).
  9. Remove the J 41480: cover alignment and bolts.
  10. Measure the rear housing-to-engine block oil pan surface for flatness. Place a straight edge onto the engine block and rear housing oil pan sealing surfaces. Avoid contact with the portion of the gasket that protrudes into the oil pan surface. Insert a feeler gage between the rear housing and the straight edge. The housing must be flush with the oil pan or no greater than 0.5 mm (0.02 in) below flush (a).
  11. If the rear housing-to-engine block oil pan surface alignment is not within specifications, repeat the housing alignment procedure.
  12. If the correct rear housing-to-engine block alignment at the oil pan surface cannot be obtained, replace the rear housing.
  1. J 41479: Crankshaft Rear Oil Seal Installer
  2. J 41479-2A: Crankshaft Rear Oil Seal Installation Guide

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. Inspect the seal and identify the part number markings for proper orientation.
  2. Install the J 41479: installer or the J 41479-2A: guide cone (2) and bolts onto the rear of the crankshaft. The J 41479-2A: guide may be required for manual transmission or 5.3L LS4 applications.
  3. Tighten the bolts until snug. Do not overtighten.
  4. Install the rear oil seal onto the tapered cone (2) and push the seal to the rear seal bore. Install the oil seal with the part number markings facing away from the engine.
  5. Thread the J 41479: installer threaded rod into the tapered cone until the tool (1) contacts the oil seal.
  6. Align the oil seal onto the tool (1).
  7. Rotate the handle of the tool (1) clockwise until the seal enters the rear housing and bottoms into the seal bore.
  8. Remove the tool.

J 41479: Crankshaft Rear Oil Seal Installer

  1. Inspect the seal and identify the part number markings for proper orientation.
  2. Install the J 41479-2B cone (2) and bolts onto the rear of the crankshaft.
  3. Tighten the bolts until snug. Do not overtighten.
  4. Install the rear oil seal onto the tapered cone (2) and push the seal to the rear seal bore. Install the oil seal with the part number markings facing away from the engine.
  5. Thread the J 41479: Installer threaded rod into the J 41479-2B tapered cone until the tool (1) contacts the oil seal.
  6. Align the oil seal onto the tool (1).
  7. Rotate the handle of the tool (1) clockwise until the seal enters the rear housing and bottoms into the seal bore.
  8. Remove the tool.
  1. J 41479: Crankshaft Rear Oil Seal Installer
  2. J 41479-2A: Crankshaft Rear Oil Seal Installation Guide

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. Inspect the seal and identify the part number markings for proper orientation.
  2. Install the J 41479: installer or the J 41479-2A: guide cone (2) and bolts onto the rear of the crankshaft. The J 41479-2A: guide may be required for manual transmission or 5.3L LS4 applications.
  3. Tighten the bolts until snug. Do not overtighten.
  4. Install the rear oil seal onto the tapered cone (2) and push the seal to the rear seal bore. Install the oil seal with the part number markings facing away from the engine.
  5. Thread the J 41479: installer threaded rod into the tapered cone until the tool (1) contacts the oil seal.
  6. Align the oil seal onto the tool (1).
  7. Rotate the handle of the tool (1) clockwise until the seal enters the rear housing and bottoms into the seal bore.
  8. Remove the tool.
  1. EN-48853: Front Cover Alignment Tool
  2. J 41480: Front and Rear Cover Alignment

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. Measure the alignment tab distance on the front cover. For 2009 model year, the engine front cover may have either a 141 mm (5.55 in) dimension (a) or 159 mm (6.26 in) dimension (b) alignment tab distance. Front cover alignment tool EN-48853: tool is designed to properly align both front covers. For the 141 mm (5.55 in) cover, adapters EN 48853-2 must be used.
  2. Install the front cover gasket (3), front cover (2), and bolts (1).
  3. Tighten the cover bolts finger tight. Do not overtighten.
  4. Install the J 41480: cover alignment and tighten the tool-to-engine block bolts to 25 N.m (18 lb ft).
  5. Install the EN 48853-2 adapters as required for usage on the 141 mm (5.55 in) dimension (a) front cover. Position the adapters against the legs of the EN-48853: tool with the words "cover side" (1) facing away from the tool.
  6. Install the EN-48853: tool (1).
  7. Install the crankshaft balancer bolt.
  8. Tighten the crankshaft balancer bolt by hand until snug. Do not overtighten.
  9. Tighten the J 41480: alignment (2).
  10. Tighten the engine front cover bolts to 25 N.m (18 lb ft).
  11. Remove the tools.
  12. Measure the oil pan surface flatness, front cover-to-engine block. Place a straight edge across the engine block and front cover oil pan sealing surfaces. Avoid contact with the portion of the gasket that protrudes into the oil pan surface. Insert a feeler gage between the front cover and the straight edge tool. The cover must be flush with the oil pan surface or no greater than 0.5 mm (0.02 in) (a) below flush.
  13. If the front cover-to-engine block oil pan surface alignment is not within specifications, repeat the cover alignment procedure.
  14. If the correct front cover-to-engine block alignment cannot be obtained, replace the front cover.
  15. Inspect the camshaft position (CMP) sensor O-ring seal (3) for cuts or damage. If the seal is not cut or damaged, it may be used again.
  16. Lubricate the O-ring seal with clean engine oil.
  17. Install the O-ring seal onto the sensor (2).
  18. Install the sensor to the cover.
  19. Install the CMP sensor wire harness (5) and bolts (1, 6).
  1. EN-48853: Front Cover Alignment Tool
  2. J 41480: Front and Rear Cover Alignment
  1. Install the front cover gasket (503), front cover (502), and bolts (501).
  2. Tighten the cover bolts finger tight. Do not overtighten.
  3. Install the J 41480: Cover.
  4. Tighten the tool-to-engine block bolts to 25 N.m (18 lb ft).
  5. Install the EN-48853: Tool (1).
  6. Install the crankshaft balancer bolt.
  7. Tighten the crankshaft balancer bolt by hand until snug. Do not overtighten.
  8. Tighten the J 41480: cover alignment (2).
  9. Tighten the engine front cover bolts to 30 N.m (22 lb ft).
  10. Remove the tools.
  11. Measure the oil pan surface flatness, front cover-to-engine block. Place a straight edge across the engine block and front cover oil pan sealing surfaces. Avoid contact with the portion of the gasket that protrudes into the oil pan surface. Insert a feeler gage between the front cover and the straight edge tool. The cover must be flush with the oil pan surface, or no greater than 0.5 mm (0.02 in) (a) below flush.
  12. If the front cover-to-engine block oil pan surface alignment is not within specifications, repeat the cover alignment procedure.
  13. If the correct front cover-to-engine block alignment cannot be obtained, replace the front cover.
  14. Inspect the camshaft position (CMP) sensor O-ring seal (704) for cuts or damage. If the seal is not cut or damaged, it may be used again.
  15. Lubricate the O-ring seal with clean engine oil.
  16. Install the O-ring seal onto the sensor (703).
  17. Install the sensor to the cover.
  18. Install the CMP bolt (705) and tighten to 12 N.m (106 lb in).
  19. Install the CMP sensor wire harness (737).
  1. EN-48853: Front Cover Alignment Tool
  2. J 41480: Front and Rear Cover Alignment

For equivalent regional tools, refer to Special Tools (6.2L LS3) or Special Tools (6.2L LS9) or Special Tools (7.0L)

  1. Install the front cover gasket (503), front cover (502), and bolts (501).
  2. Tighten the cover bolts finger tight. Do not overtighten.
  3. Install the J 41480: cover alignment. Tighten the tool-to-engine block bolts to 25 N.m (18 lb ft).
  4. Install the EN-48853: alignment tool (1).
  5. Install the crankshaft balancer bolt. Tighten the crankshaft balancer bolt by hand until snug. Do not overtighten. Tighten the J 41480: cover alignment (2). Tighten the engine front cover bolts to 25 N.m (18 lb ft).
  6. Remove the tools
  7. Measure the oil pan surface flatness, front cover-to-engine block. Place a straight edge across the engine block and front cover oil pan sealing surfaces. Avoid contact with the portion of the gasket that protrudes into the oil pan surface. Insert a feeler gage between the front cover and the straight edge tool. The cover must be flush with the oil pan surface, or no greater than 0.5 mm (0.02 in) (a) below flush.
  8. If the front cover-to-engine block oil pan surface alignment is not within specifications, repeat the cover alignment procedure.
  9. If the correct front cover-to-engine block alignment cannot be obtained, replace the front cover.
  10. Inspect the camshaft position (CMP) sensor O-ring seal (704) for cuts or damage. If the seal is not cut or damaged, it may be used again.
  11. Lubricate the O-ring seal with clean engine oil.
  12. Install the O-ring seal onto the sensor (703).
  13. Install the sensor to the cover.
  14. Install the CMP bolt (705) and tighten to 12 N.m (106 lb in).
  15. Install the CMP sensor wire harness (737).

Tools Required

J 41478 Crankshaft Front Oil Seal Installer. See Special Tools .

  1. Lubricate the outer edge of the oil seal (1) with clean engine oil.
  2. Lubricate the front cover oil seal bore with clean engine oil.
  3. Install the crankshaft front oil seal (1) onto the J 41478 . See «Special Tools»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) .
  4. Install the J 41478 threaded rod, with nut, washer, guide, and oil seal, into the end of the crankshaft. See «Special Tools»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) .
  5. Use the J 41478 in order to install the oil seal into the cover bore. See «Special Tools»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) . Use a wrench and hold the hex on the installer bolt. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the cover bore. Remove the tool. Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.
  1. EN-47812: Installer Bolt
  2. J 41478: Crankshaft Front Oil Seal Installer
  3. J 41478-1A: Crankshaft Front Oil Seal Installer Cone For equivalent regional tools, refer to «Special Tools (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) or «Special Tools (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls9) or «Special Tools (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-70l)
  1. Lubricate the outer edge of the oil seal (140) with clean engine oil.
  2. Lubricate the front cover oil seal bore with clean engine oil.
  3. Using the EN-47812: bolt and the J 41478-1A: installer cone, install the crankshaft front oil seal (140).
  4. Install the EN-47812: bolt threaded rod (1), nut, washer, the J 41478: installer guide (2), and oil seal into the end of the crankshaft.
  5. Use the J 41478: installer in order to install the oil seal into the cover bore. Use a wrench and hold the hex on the installer bolt. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the cover bore. Remove the tool. Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.
  1. EN-47812 Installer Bolt. See «Special Tools»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) .
  2. J 41478 Crankshaft Front Oil Seal Installer. See «Special Tools»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) .
  1. Lubricate the outer edge of the oil seal (140) with clean engine oil.
  2. Lubricate the front cover oil seal bore with clean engine oil.
  3. Using the EN-47812 and the J 41478 , install the crankshaft front oil seal (140). See «Special Tools»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) .
  4. Install the EN-47812 threaded rod (1), nut, washer, the J 41478 guide (2), and oil seal into the end of the crankshaft. See «Special Tools»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) .
  5. Use the J 41478 in order to install the oil seal into the cover bore. See «Special Tools»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__special-tools-62l-ls3) . Use a wrench and hold the hex on the installer bolt. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the cover bore. Remove the tool. Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.

Oil Pan Installation (6.2L LS3)

  1. Apply a 5 mm (0.2 in) bead of sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the front cover gasket that protrude into the oil pan surface. Refer to «Adhesives, Fluids, Lubricants, and Sealers (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-62l) or «Adhesives, Fluids, Lubricants, and Sealers (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-62l) or «Adhesives, Fluids, Lubricants, and Sealers (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-70l) .
  2. Apply a 5 mm (0.2 in) bead of sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the rear cover gasket that protrude into the oil pan surface.
  3. Pre-assemble the oil pan gasket to the pan. Install the gasket onto the oil pan. Install the oil pan bolts (439, 453) to the pan and through the gasket.
  4. Install the oil pan (400), gasket and bolts to the engine block.
  5. Tighten bolts finger tight. Do not overtighten.
  6. Place a straight edge across the rear of the engine block and the rear of the oil pan at the transmission housing mounting surfaces.
  7. Align the oil pan until the rear of engine block and rear of oil pan are flush or even. Tighten the oil pan-to-block and oil pan-to-front cover bolts to 25 N.m (18 lb ft). Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in).
  8. Measure the oil pan-to-engine block alignment (a). Place a straight edge across the rear of the engine block and rear of oil pan at the transmission housing mounting surfaces. NOTE: The rear of the oil pan must NEVER protrude beyond the engine block and transmission housing mounting surfaces. Insert a feeler gage between the straight edge and the oil pan transmission housing mounting surface, and inspect to ensure there is no greater than a 0.1 mm (0.004 in) gap (a) between the pan and straight edge. If the oil pan alignment is not within specifications, remove the oil pan and repeat the above procedure.

Oil Pan Installation (6.2L LS9)

  1. Apply a 5 mm (0.2 in) bead of sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the front cover gasket that protrude into the oil pan surface. Refer to «Adhesives, Fluids, Lubricants, and Sealers (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-62l) or «Adhesives, Fluids, Lubricants, and Sealers (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-62l) or «Adhesives, Fluids, Lubricants, and Sealers (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-70l) .
  2. Apply a 5 mm (0.2 in) bead of sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the rear housing gasket that protrude into the oil pan surface.
  3. Pre-assemble the oil pan gasket to the pan. Install the gasket onto the oil pan. Install the oil pan bolts (439, 453) to the pan and through the gasket.
  4. Install the oil pan (400), gasket and bolt to the engine block.
  5. Tighten the bolts finger tight. Do not overtighten.
  6. Place a straight edge across the rear of the engine block and the rear of the oil pan at the transmission housing mounting surfaces.
  7. Align the oil pan until the rear of the engine block and the rear of the oil pan are flush, or even.
  8. Tighten the oil pan-to-block and oil pan-to-front cover bolts to 25 N.m (18 lb ft).
  9. Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in).
  10. Measure the oil pan-to-engine block alignment. Place a straight edge across the rear of the engine block and rear of oil pan at the transmission housing mounting surfaces. NOTE: The rear of the oil pan must NEVER protrude beyond the engine block and transmission housing mounting surfaces. Insert a feeler gage between the straight edge and the oil pan transmission housing mounting surface. The rear of oil pan must be flush with the rear face of block or no greater than 0.5 mm (0.02 in) below flush (a). If the oil pan alignment is not within specifications, remove the oil pan and repeat the above procedure.

Oil Pan Installation (7.0L)

  1. Apply a 5 mm (0.2 in) bead of sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the front cover gasket that protrude into the oil pan surface. Refer to «Adhesives, Fluids, Lubricants, and Sealers (6.2L LS3)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-62l) or «Adhesives, Fluids, Lubricants, and Sealers (6.2L LS9)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-62l) or «Adhesives, Fluids, Lubricants, and Sealers (7.0L)»(/chevrolet/corvette/c6-2004-2014/remont/mechanical/#engine-mechanical-62l-or-70l-1-of-8__adhesives-fluids-lubricants-and-sealers-70l) .
  2. Apply a 5 mm (0.2 in) bead of sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the rear housing gasket that protrude into the oil pan surface.
  3. Pre-assemble the oil pan gasket to the pan. Install the gasket onto the oil pan. Install the oil pan bolts (439, 453) to the pan and through the gasket.
  4. Install the oil pan (400), gasket and bolt to the engine block.
  5. Tighten the bolts finger tight. Do not overtighten.
  6. Place a straight edge across the rear of the engine block and the rear of the oil pan at the transmission housing mounting surfaces.
  7. Align the oil pan until the rear of the engine block and the rear of the oil pan are flush, or even. Tighten the oil pan-to-block and oil pan-to-front cover bolts to 25 N.m (18 lb ft). Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in).
  8. Measure the oil pan-to-engine block alignment. Place a straight edge across the rear of the engine block and rear of oil pan at the transmission housing mounting surfaces. NOTE: The rear of the oil pan must NEVER protrude beyond the engine block and transmission housing mounting surfaces. Insert a feeler gage between the straight edge and the oil pan transmission housing mounting surface, and inspect to ensure there is no greater than a 0.1 mm (0.004 in) gap (a) between the pan and straight edge. If the oil pan alignment is not within specifications, remove the oil pan and repeat the above procedure.

See also:
• Fastener Caution
• Safety Glasses Warning
• Intake Manifold Removal (6.2L LS3)
• Intake Manifold Removal (7.0L)
• Fuel Rail and Injectors Removal (6.2L LS3)
• Fuel Rail and Injectors Removal (7.0L)
• Throttle Body Removal (6.2L LS3)
• Throttle Body Removal (6.2L LS9)
• Throttle Body Removal (7.0L)
• Special Tools (6.2L LS3)
• Special Tools (6.2L LS9)
• Special Tools (7.0L)
• Replacing Engine Gaskets
• Cleanliness and Care
• Separating Parts
• Adhesives, Fluids, Lubricants, and Sealers (6.2L LS3)
• Adhesives, Fluids, Lubricants, and Sealers (7.0L)
• Engine Mechanical Specifications (6.2L LS3)
• Engine Mechanical Specifications (6.2L LS9)
• Engine Mechanical Specifications (7.0L)
• Engine Flywheel Installation (6.2L LS3)
• Engine Flywheel Installation (6.2L LS9)
• Engine Flywheel Removal (6.2L LS3)
• Engine Flywheel Removal (6.2L LS9)
• Engine Flywheel Removal (7.0L LS7)

More articles — Engine