Engine Mechanical - 4.8L, 5.3L & 6.0L: Specifications

Fastener Tightening Specifications

Application		Ft. Lbs (N.m)
A/C Belt Tensioner Bolt		37 (50)
Automatic Transmission Bolt/Stud		37 (50)
Automatic Transmission Oil Level Indicator Tube Nut		13 (18)
Camshaft Retainer Bolts		18 (25)
Camshaft Sensor Bolt		18 (25)
Camshaft Sprocket Bolts		26 (35)
Connecting Rod Bolts
First Tightening Pass		15 (20)
Final Tightening Pass		75 Degrees
Coolant Temperature Gage Sensor		15 (20)
Crankshaft Balancer Bolt
Installation Tightening Pass (To Ensure Balancer Is Completely Installed)		240 (330)
First Tightening Pass (Install NEW Bolt After Installation Pass & Tighten As Described In First & Final Passes)		37 (50)
Final Tightening Pass		140 Degrees
Crankshaft Bearing Cap Bolts (1)
First Tightening Pass		15 (20)
Final Tightening Pass (Inner Bolts)		80 Degrees
Final Tightening Pass (Outer Bolts)		51 Degrees
Crankshaft Bearing Cap Side Bolts		18 (25)
Crankshaft Oil Deflector Nuts		18 (25)
Crankshaft Position Sensor Bolt		18 (25)
Crossbar Bolts		74 (100)
Cylinder Head Bolts (2)
First Tightening Pass (All M11 Bolts)		22 (30)
Second Tightening Pass (All M11 Bolts)		90 Degrees
Final Tightening Pass (All M11 Bolts - Excluding Medium Length Bolts At Front & Rear Of Each Cylinder Head)		90 Degrees
Final Tightening Pass (M11 Medium Length Bolts At Front & Rear Of Each Cylinder Head)		50 Degrees
M8 Inner Bolts		22 (30)
Cylinder Head Coolant Plug		15 (20)
Drive Belt Idler Pulley Bolt		37 (50)
Engine Block Coolant Drain Plugs		44 (60)
Engine Block Heater		30 (40)
Engine Block Oil Gallery Plugs		44 (60)
Engine Block Wire Harness Rear Ground Bolt		12 (16)
Engine Flywheel Bolts (3)
First Tightening Pass		15 (20)
Second Tightening Pass		37 (50)
Final Tightening Pass		74 (100)
Engine Front Cover Bolts		18 (25)
Engine Lift Bracket Bolt
M8		18 (25)
M10		37 (50)
Engine Mount to Engine Bolts		37 (50)
Engine Mount to Frame Bracket Bolts		44 (60)
Engine Rear Cover Bolts		18 (25)
Engine Service Lift Bracket
M10 Bolts		37 (50)
M8 Bolts		18 (25)
Engine Valley Cover Bolts		18 (25)
EGR Valve Pipe-To-Cylinder Head Bolts		37 (50)
EGR Valve Pipe-To-Exhaust Manifold Bolts		22 (30)
Exhaust Manifold Bolts
First Tightening Pass		11 (15)
Final Tightening Pass		18 (25)
Fuel Rail Stop Bracket Bolt		37 (50)
Generator Bolt		37 (50)
Generator Bracket Bolts		37 (50)
Ground Harness Bolt		18 (25)
Knock Sensors		18 (25)
Oil Filter		22 (30)
Oil Filter Fitting		40 (55)
Oil Level Indicator Tube Bolt		18 (25)
Oil Pan Drain Plug		18 (25)
Oil Pan M8 Bolts (Oil Pan-To-Engine Block & Oil Pan-To-Front Cover)		18 (25)
Oil Pressure Sensor		15 (20)
Oil Pump-To-Engine Block Bolts		18 (25)
Oil Pump Screen Nuts		18 (25)
Power Steering Pump Rear Bolt		37 (50)
Spark Plugs
New Cylinder Heads		15 (20)
All Subsequent Installations		11 (15)
Torque Converter Bolts		47 (63)
Valve Rocker Arm Bolts		22 (30)
Water Inlet Housing Bolts		11 (15)
Water Pump Bolts
First Tightening Pass		11 (15)
Final Tightening Pass		22 (30)
Water Pump Cover Bolts		11 (15)
INCH Lbs. (N.m)
Accelerator Control Cable Bracket Bolts		89 (10)
Air Cleaner Outlet Duct Clamp Screws		62 (7)
Battery Cable Channel Bolt		106 (12)
Engine Coolant Air Bleed Pipe & Cover Bolts		106 (12)
Evaporative Emission Purge Solenoid Bolt		89 (10)
Exhaust Gas Recirculation Valve Bolts
First Tightening Pass		89 (10)
Final Tightening Pass		22 FOOT (30)
EGR Valve Pipe-To-Intake Manifold Bolt		89 (10)
Exhaust Manifold Heat Shield Bolts		80 (9)
Fuel Rail Bolts		89 (10)
Fuel Rail Crossover Tube Bolts		34 (3.8)
Generator Output Terminal Nut		80 (9)
Ignition Coil-To-Bracket Bolts		71 (8)
Ignition Coil Bracket-To-Valve Rocker Arm Cover Bolts		106 (12)
Intake Manifold Bolts (4)
First Tightening Pass		44 (5)
Final Tightening Pass		89 (10)
Intake Manifold Wiring Harness Stud		89 (10)
Oil Level Sensor		115 (13)
Oil Pan Baffle Bolts		106 (12)
Oil Pan Closeout Cover Bolt (Left & Right Side)		80 (9)
Oil Pan Cover Bolts		106 (12)
Oil Pan M6 Bolts (Oil Pan-to-Rear Cover)		106 (12)
Oil Pump Cover Bolts		106 (12)
Oil Pump Relief Valve Plug		106 (12)
Oil Pump Screen-To-Oil Pump Bolt		106 (12)
Positive Battery Cable Clip Bolt		80 (9)
Throttle Body Nuts		89 (10)
Throttle Body Studs		53 (6)
Transmission Cover Bolt		106 (12)
Valve Lifter Guide Bolts		106 (12)
Valve Rocker Arm Cover Bolts		106 (12)
(1) Tighten bolts following sequence as shown. (Scheme 728) (2) Tighten bolts following sequence as shown. (Scheme 729) (3) Tighten bolts following sequence as shown. (Scheme 730) (4) Tighten bolts following sequence as shown. (Scheme 731)

(1)	Tighten bolts following sequence as shown. (Scheme 728)

(2)	Tighten bolts following sequence as shown. (Scheme 729)

(3)	Tighten bolts following sequence as shown. (Scheme 730)

(4)	Tighten bolts following sequence as shown. (Scheme 731)

TORQUE SPECIFICATIONS

Scheme 728

Scheme 729

Scheme 730

Scheme 731

Engine Mechanical Specifications (LR4 VIN V)

Application		Specification
Application		Metric	English
General
	Engine Type	V8
	Displacement	4.8L	293 CID
	RPO	LR4
	VIN	V
	Bore	96.0-96.018 mm	3.779-3.78 in
	Stroke	83.0 mm	3.268 in
	Compression Ratio	9.47:1
	Firing Order	1-8-7-2-6-5-4-3
	Spark Plug Gap	1.524 mm	0.06 in
Block
	Camshaft Bearing Bore Diameter	55.063-55.088 mm	2.168-2.169 in
	Crankshaft Main Bearing Bore Diameter	69.871-69.889 mm	2.75-2.751 in
	Crankshaft Main Bearing Bore Out-of-Round	0.006 mm	0.0002 in
	Cylinder Bore Diameter	96.0-96.018 mm	3.779-3.78 in
	Cylinder Bore Taper - Thrust Side	0.018 mm	0.0007 in
	Cylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face	234.57-234.82 mm	9.235-9.245 in
	Cylinder Head Deck Surface Flatness - Measured Within a 152.4 mm (6.0 in) Area	0.11 m	0.004 in
	Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck	0.22 mm	0.008 in
	Valve Lifter Bore Diameter	21.417-21.443 mm	0.843-0.844 in
Camshaft
	Camshaft End Play	0.025-0.305 mm	0.001-0.012 in
	Camshaft Journal Diameter	54.99-55.04 mm	2.164-2.166 in
	Camshaft Journal Out-of-Round	0.025 mm	0.001 in
	Camshaft Lobe Lift - Exhaust	6.96 mm	0.274 in
	Camshaft Lobe Lift - Intake	6.82 mm	0.268 in
	Camshaft Runout - Measured at the Intermediate Journals	0.05 mm	0.002 in
Connecting Rod
	Connecting Rod Bearing Clearance - Production	0.023-0.065 mm	0.0009-0.0025 in
	Connecting Rod Bearing Clearance - Service	0.023-0.076 mm	0.0009-0.003 in
	Connecting Rod Bore Diameter - Bearing End	56.505-56.525 mm	2.224-2.225 in
	Connecting Rod Bore Out-of-Round - Bearing End - Production	0.004-0.008 mm	0.00015-0.0003 in
	Connecting Rod Bore Out-of-Round - Beating End - Service	0.004-0.008 mm	0.00015-0.0003 in
	Connecting Rod Side Clearance	0.11-0.51 mm	0.00433-0.02 in
Crankshaft
	Connecting Rod Journal Diameter - Production	53.318-53.338 mm	2.0991-2.0999 in
	Connecting Rod Journal Diameter - Service	53.308 mm	2.0987 in
	Connecting Rod Journal Out-of-Round - Production	0.005 mm	0.0002 in
	Connecting Rod Journal Out-of-Round - Service	0.01 mm	0.0004 in
	Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Production	0.005 mm	0.0002 in
	Connecting Rod Journal Taper - Maximum for of Journal 1/2 Length - Service	0.02 mm	0.00078 in
	Crankshaft End Play	0.04-0.2 mm	0.0015-0.0078 in
	Crankshaft Main Bearing Clearance - Production	0.02-0.052 mm	0.0008-0.0021 in
	Crankshaft Main Bearing Clearance - Service	0.02-0.065 mm	0.0008-0.0025 in
	Crankshaft Main Journal Diameter - Production	64.993-65.007 mm	2.558-2.559 in
	Crankshaft Main Journal Diameter - Service	64.993 mm	2.558 in
	Crankshaft Main Journal Out-of-Round - Production	0.003 mm	0.000118 in
	Crankshaft Main Journal Out-of-Round - Service	0.008 mm	0.0003 in
	Crankshaft Main Journal Taper- Production	0.01 mm	0.0004 in
	Crankshaft Main Journal Taper - Service	0.02 mm	0.00078 in
	Crankshaft Rear Flange Runout	0.05 mm	0.002 in
	Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04 in) Below Tooth Diameter	0.7 mm	0.028 in
	Crankshaft Thrust Surface - Production	26.14-26.22 mm	1.029-1.0315 in
	Crankshaft Thrust Surface - Service	26.22 mm	1.0315 in
	Crankshaft Thrust Surface Runout	0.025 mm	0.001 in
Cylinder Head
	Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface	120.0 mm	4.732 in
	Surface Flatness - Block Deck Measured Within a 152.4 mm (6.0 in) Area	0.08 mm	0.003 in
	Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head	0.1 mm	0.004 in
	Surface Flatness - Exhaust Manifold Deck	0.13 mm	0.005 in
	Surface Flatness - Intake Manifold Deck	0.08 mm	0.0031 in
	Valve Guide Installed Height - Measured from the Spring Seat Surface to the Top of the Guide	17.32 mm	0.682 in
Intake Manifold
	Surface Flatness - Measured at Gasket Sealing Surfaces and Measured Within a 200 mm (7.87 in) Area that Includes Two Runner Port Openings	0.3 mm	0.118 in
Lubrication System
	Oil Capacity - with Filter	5.68 Liters	6.0 Quarts
	Oil Capacity - without Filter	4.73 Liters	5.0 Quarts
	Oil Pressure - Minimum - Hot	41 kPa at 1,000 engine RPM	6 psig at 1,000 engine RPM
		124 kPa at 2,000 engine RPM	18 Psi9 at 2,000 engine RPM
		165 kPa at 4,000 engine RPM	24 psig at 4,000 engine RPM
Oil Pan
	Front Cover Alignment - at Oil Pan Surface	0.0-0.5 mm	0.0-0.02 in
	Rear Cover Alignment - at Oil Pan Surface	0.0-0.5 mm	0.0-0.02 in
	Oil Pan Alignment - to Rear of Engine Block at Transmission Bell Housing Mounting Surface	0.0-0.25 mm	0.0-0.01 in
Piston Rings
	Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production	0.23-0.44 mm	0.009-0.017 in
	Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service	0.23-0.5 mm	0.009-0.0196 in
	Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production	0.44-0.7 mm	0.017-0.027 in
	Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service	0.44-0.76 mm	0.0173-0.30 in
	Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production	0.18-0.75 mm	0.007-0.029 in
	Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service	0.18-0.81 mm	0.007-0.032 in
	Piston Ring to Groove Clearance - First Compression Ring - Production	0.04-0.085 mm	0.00157-0.00335 in
	Piston Ring to Groove Clearance - First Compression Ring - Service	0.04-0.085 mm	0.00157-0.00335 in
	Piston Ring to Groove Clearance - Second Compression Ring - Production	0.04-0.078 mm	0.00157-0.0031 in
	Piston Ring to Groove Clearance - Second Compression Ring - Service	0.040-0.078 mm	0.00157-0.0031 in
	Piston Ring to Groove Clearance - Oil Control Ring - Production	0.012-0.2 mm	0.0005-0.0078 in
	Piston Ring to Groove Clearance - Oil Control Ring - Service	0.012-0.2 mm	0.0005-0.0078 in
Pistons and Pins
	Piston - Piston Diameter - Measured Over Skirt Coating	96.002-96.036 mm	3.779-3.78 in
	Piston - Piston to Bore Clearance - Production	0.036 to 0.016 mm	0.0014 to 0.0006 in
	Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off	0.071 mm	0.0028 in
	Pin - Piston Fit in Connecting Rod Bore	0.02-0.043 mm - interference	0.00078-0.00169 in - interference
	Pin - Piston Pin Clearance to Piston Pin Bore - Production	0.007-0.02 mm	0.00027-0.00078 in
	Pin - Piston Pin Clearance to Piston Pin Bore - Service	0.007-0.021 mm	0.00027-0.00082 in
Pin - Piston Pin Diameter 23.997-24.0 mm 0.9447-0.9448 in
Valve System
	Valves - Valve Face Angle	45 degrees
	Valves - Valve Face Width	1.25 mm	0.05 in
	Valves - Valve Lash	Net Lash - No Adjustment
	Valves - Valve Lift - Intake	11.6 mm	0.457 in
Valves - Valve Lift - Exhaust	11.85 mm	0.466 in
	Valves - Valve Seat Angle	46 degrees
Valves - Valve Seat Runout	0.05 mm	0.002 in
Valves - Valve Seat Width - Exhaust	1.78 mm	0.07 in
Valves - Seat Width - Intake	1.02 mm	0.04 in
Valves - Valve Stem Diameter - Production	7.955-7.976 mm	0.313-0.314 in
Valves - Valve Stem Diameter - Service	7.95 mm	0.313 in
Valves - Stem-to-Guide Clearance - Production - Intake	0.025-0.066 mm	0.001-0.0026 in
Valves - Stem-to-Guide Clearance - Service - Intake	0.093 mm	0.0037 in
	Valves - Stem-to-Guide Clearance - Production - Exhaust 0.025-0.066 mm	0.001-0.0026 in
	Valves - Stem-to-Guide Clearance - Service - Exhaust 0.093 mm	0.0037 in
	Rocker Arms - Valve Rocker Arm Ratio	1.70:1
Valve Springs - Valve Spring Free Length	52.9 mm	2.08 in
Valve Springs - Installed Height	45.75 mm	1.8 in
	Valve Springs - Valve Spring Load - Closed 340 N at 45.75 mm	76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open	980 N at 33.55 mm	220 lb at 1.32 in

ENGINE MECHANICAL SPECIFICATIONS (LR4 VIN V)

Engine Mechanical Specifications (LM7 VIN T)

Application		Specification
Application		Metric	English
General
	Engine Type	V 8
	Displacement	5.3L	325 CID
	RPO	LM7
	VIN	T
	Bore	96.0-96.018 mm	3.779-3.78 in
	Stroke	92.0 mm	3.622 in
	Compression Ratio	9.49:1
	Firing Order	1-8-7-2-6-5-4-3
	Spark Plug Gap	1.524 mm	0.06 in
Block
	Camshaft Bearing Bore Diameter	55.063-55.088 mm	2.168-2.169 in
	Crankshaft Main Bearing Bore Diameter	69.871-69.889 mm	2.75-2.751 in
	Crankshaft Main Bearing Bore Out-of-Round	0.006 mm	0.0002 in
	Cylinder Bore Diameter	96.0-96.018 mm	3.779-3.78 in
	Cylinder Bore Taper - Thrust Side	0.018 mm	0.0007 in
	Cylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face	234.57-234.82 mm	9.235-9.245 in
	Cylinder Head Deck Surface Flatness - Measured Within a 152.4 mm (6.0 in) Area	0.11 mm	0.004
	Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck	0.22 mm	0.008 in
	Valve Lifter Bore Diameter	21.417-21.443 mm	0.843-0.844 in
Camshaft
	Camshaft End Play	0.025-0.305 mm	0.001-0.012 in
	Camshaft Journal Diameter	54.99-55.04 mm	2.164-2.166 in
	Camshaft Journal Out-of-Round	0.025 mm	0.001 in
	Camshaft Lobe Lift - Exhaust	6.96 mm	0.274 in
	Camshaft Lobe Lift - Intake	6.82 mm	0.268 in
	Camshaft Runout - Measured at the Intermediate Journals	0.05 mm	0.002 in
Connecting Rod
	Connecting Rod Bearing Clearance - Production	0.023-0.065 mm	0.0009-0.0025 in
	Connecting Rod Bearing Clearance - Service	0.023-0.076 mm	0.0009-0.003 in
	Connecting Rod Bore Diameter - Bearing End	56.505-56.525 mm	2.224-2.225 in
	Connecting Rod Bore Out-of-Round - Bearing End - Production	0.004-0.008 mm	0.00015-0.0003 in
	Connecting Rod Bore Out-of-Round - Bearing End - Service	0.004-0.008 mm	0.00015-0.0003 in
	Connecting Rod Side Clearance	0.11-0.51 mm	0.00433-0.02 in
Crankshaft
	Connecting Rod Journal Diameter - Production	53.318-53.338 mm	2.0991-2.0999 in
	Connecting Rod Journal Diameter - Service	53:308 mm	2.0987 in
	Connecting Rod Journal Out-of-Round - Production	0.005 mm	0.0002 in
	Connecting Rod Journal Out-of-Round - Service	0.01 mm	0.0004 in
	Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Production	0.005 mm	0.0002 in
	Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Service	0.02 mm	0.00078 in
	Crankshaft End Play	0.04-0.2 mm	0.0015-0.0078 in
	Crankshaft Main Bearing Clearance - Production	0.02-0.052 mm	0.0008-0.0021 in
	Crankshaft Main Bearing Clearance - Service	0.02-0.065 mm	0.0008-0.0025 in
	Crankshaft Main Journal Diameter - Production	64.993-65.007 mm	2.558-2.559 in
	Crankshaft Main Journal Diameter - Service	64.993 mm	2.558 in
	Crankshaft Main Journal Out-of-Round - Production	0.003 mm	0.000118 in
	Crankshaft Main Journal Out-of-Round - Service	0.008 mm	0.0003 in
	Crankshaft Main Journal Taper - Production	0.01 mm	0.0004 in
	Crankshaft Main Journal Taper - Service	0.02 mm	0.00078 in
	Crankshaft Rear Range Runout	0.05 mm	0.002 in
	Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04 in) Below Tooth Diameter	0.7 mm	0.028 in
	Crankshaft Thrust Surface - Production	26.14-26.22 mm	1.029-1.0315 in
	Crankshaft Thrust Surface - Service	26.22 mm	1.0315 in
	Crankshaft Thrust Surface Runout	0.025 mm	0.001 in
Cylinder Head
	Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface	120.2 mm	4.732 in
	Surface Flatness - Block Deck - Measured Within a 152.4 mm (6.0 in) Area	0.08 mm	0.003 in
	Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head	0.1 mm	0.004 in
	Surface Flatness - Exhaust Manifold Deck	0.13 mm	0.005 in
	Surface Flatness - Intake Manifold Deck	0.08 mm	0.0031 in
	Valve Guide Installed Height - Measured from the Spring Seat Surface to the Top of the Guide	17.32 mm	0.682 in
Intake Manifold
	Surface Flatness - Measured at Gasket Sealing Surfaces and Measured Within a 200 mm (7.87 in) Area that Includes Two Runner Port Openings	0.3 mm	0.118 in
Lubrication System
	Oil Capacity - with Filter	5.68 Liters	6.0 Quarts
	Oil Capacity - without Filter	4.73 Liters	5.0 Quarts
		41 kPa at 1,000 engine RPM	6 psig at 1,000 engine RPM
	Oil Pressure - Minimum Hot	124 kPa at 2,000 engine RPM	18 psig at 2,000 engine RPM
		165 kPa at 4,000 engine RPM	24 psig at 4,000 engine RPM
Oil Pan
	Front Cover Alignment - at Oil Pan Surface	0.0-0.5 mm	0.0-0.02 in
	Rear Cover Alignment - at Oil Pan Surface	0.0-0.5 mm	0.0-0.02 in
	Oil Pan Alignment - to Rear of Engine Block at Transmission Bell Housing Mounting Surface	0.0-0.25 mm	0.0-0.01 in
Piston Rings
	Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production	0.23-0.44 mm	0.009-0.017 in
	Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service	0.23-0.5 mm	0.009-0.0196 in
	Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore -Production	0.44-0.7 mm	0.017-0.027 in
	Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service	0.44-0.76 mm	0.0173-0.03 in
	Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production	0.18-0.75 mm	0.007-0.029 in
	Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service	0.18-0.81 mm	0.007-0.032 in
	Piston Ring to Groove Clearance - First Compression Ring - Production	0.04-0.085 mm	0.00157-0.00335 in
	Piston Ring to Groove Clearance - First Compression Ring - Service	0.04-0.085 mm	0.00157-0.00335 in
	Piston Ring to Groove Clearance - Second Compression Ring - Production	0.04-0.078 mm	0.00157-0.0031 in
	Piston Ring to Groove Clearance - Second Compression Ring - Service	0.04-0.078 mm	0.00157-0.0031 in
	Piston Ring to Groove Clearance - Oil Control Ring - Production 0.012-0.2 mm	0.0005-0.0078 in
	Piston Ring to Groove Clearance - Oil Control Ring - Service	0.012-0.2 mm	0.0005-0.0078 in
Pistons and Pins
	Piston - Piston Diameter - Measured Over Skirt Coating	96.002-96.036 mm	3.779-3.78 in
	Piston - Piston to Bore Clearance - Production	0.036 to 0.016 mm	0.0014 to 0.0006 in
	Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off	0.071 mm	0.0028 in
	Pin - Piston Pin Fit in Connecting Rod Bore	0.02-0.043 mm - interference	0.00078-0.00169 in - interference
	Pin - Piston Pin Clearance to Piston Pin Bore - Production	0.007-0.02 mm	0.00027-0.00078 in
	Pin - Piston Pin Clearance to Piston Pin Bore - Service 0.007-0.021 mm	0.00027-0.00082 in
	Pin - Piston Pin Diameter	23.997-24.0 mm	0.9447-0.9448 in
Valve System
	Valves - Valve Face Angle	45 degrees
	Valves - Valve Face Width	1.25 mm	0.05 in
	Valves - Valve Lash	Net Lash - No Adjustment
	Valves - Valve Lift - Intake	11.6 mm	0.457 in
Valves - Valve Lift - Exhaust	11.85 mm	0.466 in
	Valves - Valve Seat Angle	46 degrees
Valves - Valve Seat Runout	0.05 mm	0.002 in
Valves - Valve Seat Width - Exhaust	1.78 mm	0.07 in
Valves - Seat Width - Intake	1.02 mm	0.04 in
Valves - Valve Stem Diameter - Production	7.955-7.976 mm	0.313-0.314 in
Valves - Valve Stem Diameter - Service	7.95 mm	0.313 in
Valves - Valve Stem-to-Guide Clearance - Production - Intake	0.025-0.066 mm	0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Intake	0.093 mm	0.0037 in
Valves - Valve Stem-to-Guide Clearance - Production - Exhaust	0.025-0.066 mm	0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Exhaust	0.093 mm	0.0037 in
	Rocker Arms - Valve Rocker Arm Ratio	1.70:1
Valve Springs - Valve Spring Free Length	52.9 mm	2.08 in
Valve Springs - Valve Spring Installed Height	45.75 mm	1.8 in
Valve Springs - Valve Spring Load - Closed	340 N at 45.75 mm	76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open	980 N at 33.55 mm	220 lb at 1.32 in

ENGINE MECHANICAL SPECIFICATIONS (LM7 VIN T)

Engine Mechanical Specifications (LQ4 VIN U)

Application		Specification
Application		Metric	English
General
	Engine Type	V 8
	Displacement	6.0L	364 CID
	RPO	LQ4
	VIN	U
	Bore	101.618-101.636 mm	4.0007-4.0014 in
	Stroke	92.0 mm	3.622 in
	Compression Ratio	9.41:1
	Firing Order	1-8-7-2-6-5-4-3
	Spark Plug Gap	1.524 mm	0.06 in
Block
	Camshaft Bearing Bore Diameter	55.063-55.088 mm	2.168-2.169 in
	Crankshaft Main Bearing Bore Diameter	69.871-69.889 mm	2.75-2.751 in
	Crankshaft Main Bearing Bore Out-of-Round	0.006 mm	0.0002 in
	Cylinder Bore Diameter	101.618-101.636 mm	4.0007-4.0017 in
	Cylinder Bore Taper - Thrust Side	0.018 mm	0.0007 in
	Cylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face	234.57-234.82 mm	9.235-9.245 in
	Cylinder Head Deck Surface Flatness - Measured within a 152.4 mm (6.0 in) Area	0.11 mm	0.004 in
	Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck	0.22 mm	0.008 in
	Valve Lifter Bore Diameter	21.417-21.443 mm	0.843-0.844 in
Camshaft
	Camshaft End Play	0.025-0.305 mm	0.001-0.012 in
	Camshaft Journal Diameter	54.99-55.04 mm	2.164-2.166 in
	Camshaft Journal Out-of-Round	0.025 mm	0.001 in
	Camshaft Lobe Lift - Exhaust	7.13 mm	0.281 in
	Camshaft Lobe Lift - Intake	6.96 mm	0.274 in
	Camshaft Runout - Measured at the Intermediate Journals	0.05 mm	0.002 in
Connecting Rod
	Connecting Rod Bearing Clearance - Production	0.023-0.065 mm	0.0009-0.0025 in
	Connecting Rod Bearing Clearance - Service	0.023-0.076 mm	0.0009-0.003 in
	Connecting Rod Bore Diameter - Bearing End	56.505-56.525 mm	2.224-2.225 in
	Connecting Rod Bore Out-of-Round - Bearing End - Production	0.006 mm	0.0002 in
	Connecting Rod Bore Out-of-Round - Bearing End - Service	0.006 mm	0.0002 in
	Connecting Rod Side Clearance	0.11-0.51 mm	0.00433-0.02 in
Crankshaft
	Connecting Rod Journal Diameter - Production	53.318-53.338 mm	2.0991-2.0999 in
	Connecting Rod Journal Diameter - Service	53.308 mm	2.0987 in
	Connecting Rod Journal Out-of-Round - Production	0.005 mm	0.0002 in
	Connecting Rod Journal Out-of-Round - Service	0.01 mm	0.0004 in
	Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Production	0.005 mm	0.0002 in
	Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Service	0.02 mm	0.00078 in
	Crankshaft End Play	0.04-0.2 mm	0.0015-0.0078 in
	Crankshaft Main Bearing Clearance - Production	0.02-0.052 mm	0.0008-0.0021 in
	Crankshaft Main Bearing Clearance - Service	0.02-0.065 mm	0.0008-0.0025 in
	Crankshaft Main Journal Diameter - Production	64.993-65.007 mm	2.558-2.559 in
	Crankshaft Main Journal Diameter - Service	64.993 mm	2.558 in
	Crankshaft Main Journal Out-of-Round - Production	0.003 mm	0.000118 in
	Crankshaft Main Journal Out-of-Round - Service	0.008 mm	0.0003 in
	Crankshaft Main Journal Taper - Production	0.01 mm	0.0004 in
	Crankshaft Main Journal Taper - Service	0.02 mm	0.00078 in
	Crankshaft Rear Flange Runout	0.05 mm	0.002 in
	Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04 in) Below Tooth Diameter	0.07 mm	0.028 in
	Crankshaft Thrust Surface - Production	26.14-26.22 mm	1.029-1.0315 in
	Crankshaft Thrust Surface - Service	26.22 mm	1.0315 in
	Crankshaft Thrust Surface Runout	0.025 mm	0.001 in
Cylinder Head
	Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface	120.2 mm	4.732 in
	Surface Flatness - Block Deck - Measured Within a 152.4 mm (6.0 in) Area	0.08 mm	0.003 in
	Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head	0.1 mm	0.004 in
	Surface Flatness - Exhaust Manifold Deck	0.13 mm	0.005 in
	Surface Flatness - Intake Manifold Deck	0.08 mm	0.0031 in
	Valve Guide Installed Height - Measured from the Spring Seat Surface to the Top of the Guide	17.32 mm	0.682 in
Intake Manifold
	Surface Flatness - Measured at Gasket Sealing Surfaces and Measured Within a 200 mm (7.87 in) Area that Includes Two Runner Port Openings	0.3 mm	0.118 in
Lubrication System
	Oil Capacity - with Filter	5.68 Liters	6.0 Quarts
	Oil Capacity - without Filter	4.73 Liters	5.0 Quarts
		41 kPa at 1,000 engine RPM	6 psig at 1,000 engine RPM
	Oil Pressure - Minimum - Hot	124 kPa at 2,000 engine RPM	18 psig at 2,000 engine RPM
		165 kPa at 4,000 engine RPM	24 psig at 4,000 engine RPM
Oil Pan
	Front Cover Alignment - at Oil Pan Surface	0.0-0.5 mm	0.0-0.02 in
	Rear Cover Alignment - at Oil Pan Surface	0.0-0.5 mm	0.0-0.02 in
	Oil Pan Alignment - to Rear of Engine Block at Transmission Bell Housing Mounting Surface	0.0-0.25 mm	0.0-0.01 in
Piston Rings
	Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production	0.31-0.52 mm	0.012-0.02 in
	Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service	0.31-0.59 mm	0.0122-0.023 in
	Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production	0.51-0.77 mm	0.02-0.03 in
	Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service	0.51-0.84 mm	0.02-0.033 in
	Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production	0.31-0.87 mm	0.0122-0.034 in
	Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service	0.31-0.94 mm	0.0122-0.037 in
	Piston Ring to Groove Clearance - First Compression Ring - Production	0.04-0.08 mm	0.00157-0.0031 in
	Piston Ring to Groove Clearance - First Compression Ring - Service	0.04-0.08 mm	0.00157-0.0031 in
	Piston Ring to Groove Clearance - Second Compression Ring - Service	0.039-0.079 mm	0.0015-0.0031 in
	Piston Ring to Groove Clearance - Second Compression Ring - Service	0.039-0.079 mm	0.0015-0.0031 in
	Piston Ring to Groove Clearance - Oil Control Ring - Production	0.015-0.199 mm	0.0006-0.0078 in
	Piston Ring to Groove Clearance - Oil Control Ring - Service	0.015-0.199 mm	0.0006-0.0078 in
Pistons and Pins
	Piston - Piston Diameter - Measured Over Skirt Coating	101.606-101.640 mm	4.0002-4.0016 in
	Piston - Piston to Bore Clearance - Production	0.022-0.03 mm - interference	0.0009-0.0012 in - interference
	Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off	0.07 mm	0.0028 in
	Pin - Piston Pin Fit in Connecting Rod Bore	0.02-0.043 mm - interference	0.00078-0.00169 in - interference
	Pin - Piston Pin Clearance to Piston Pin Bore - Production	0.011-0.018 mm	0.0004-0.0007 in
	Pin - Piston Pin Clearance to Piston Pin Bore - Service	0.011-0.02 mm	0.0004-0.0008 in
	Pin - Piston Pin Diameter	23.997-24.0 mm	0.9447-0.9448 in
Valve System
	Valves - Valve Face Angle	45 degrees
	Valves - Valve Face Width	1.25 mm	0.05 in
	Valves - Valve Lash	Net Lash - No Adjustment
	Valves - Valve Lift - Intake	11.79 mm	0.464 in
Valves - Valve Lift - Exhaust	12.16 mm	0.479 in
	Valves - Valve Seat Angle	46 degrees
Valves - Valve Seat Runout	0.05 mm	0.002 in
Valves - Valve Seat Width - Exhaust	1.78 mm	0.07 in
Valves - Valve Seat Width - Intake	1.02 mm	0.04 in
Valves - Valve Stem Diameter - Production	7.955-7.976 mm	0.313-0.314 in
Valves - Valve Stem Diameter - Service	7.95 mm	0.313 in
Valves - Valve Stem-to-Guide Clearance - Production - Intake	0.025-0.066 mm	0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Intake	0.093 mm	0.0037 in
Valves - Valve Stem-to-Guide Clearance - Production - Exhaust	0.025-0.066 mm	0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Exhaust	0.093 mm	0.0037 in
	Rocker Arms - Valve Rocker Arm Ratio	1.70:1
Valve Springs - Valve Spring Free Length	52.9 mm	2.08 in
Valve Springs - Valve Spring Installed Height	45.75 mm	1.8 in
Valve Springs - Valve Spring Load - Closed	340 N at 45.75 mm	76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open	980 N at 33.55 mm	220 lb at 1.32 in

ENGINE MECHANICAL SPECIFICATIONS (LQ4 VIN U)

Scheme 732

Scheme 732: Sealers, Adhesives, and Lubricants

Scheme 733

Scheme 733: Engine Block-Front View

Scheme 734

Scheme 735

Scheme 735: Engine Block-Rear View

Scheme 736

Scheme 737

Scheme 737: Engine Block-Left Side View

Scheme 738

Scheme 739

Scheme 740

Scheme 740: Engine Block-Right Side View

Scheme 741

Scheme 742

Scheme 743

Scheme 743: Engine Block-Bottom View

Scheme 744

Scheme 745

Scheme 746

Scheme 746: Engine Block-Top View

Scheme 747

Scheme 748

Scheme 748: Cylinder Head-Top View

Scheme 749

Scheme 750

Scheme 750: Cylinder Head-End View

Scheme 751

Scheme 752

Scheme 752: Cylinder Head-Exhaust Manifold Deck View

Scheme 753

Scheme 754

Scheme 754: Cylinder Head-Intake Manifold Deck View

Scheme 755

Scheme 756

Scheme 756: Disassembled Views

Scheme 757

Scheme 758

Scheme 759

Scheme 760

Scheme 761

Scheme 762

Scheme 762: Engine Identification

The vehicle identification number (VIN) is located on the left side rear of the engine block (1) and is typically a nine digit number stamped or laser-etched onto the engine at the vehicle assembly plant.

The first digit identifies the division.
The second digit identifies the model year.
The third digit identifies the assembly plant.
The fourth through ninth digits are the last six digits of the VIN.

Torque Values and/or Fastener Tightening Strategies

All fasteners and threaded holes on the 4.8/5.3/6.0 liter engines utilize metric threads.
Cylinder head, connecting rod, crankshaft balancer, and main bearing cap bolts now apply a torque angle strategy.
Certain fasteners should not be used again. Bolts, studs, or other fasteners that must be replaced will be called out in the specific service procedure.
Refer to «Fastener Tightening Specifications»(ref-159064-S09304759142005031500000) and «Thread Repair Specifications»(ref-159064-S11947654312005031600000) .

Changed Engine Specifications

Engine specification tables content and format have been commonized.

Engine Mechanical - 4.8L, 5.3L & 6.0L: Specifications GMC Savana H2500