Engine Mechanical - 5.3L: Specifications — Chevrolet TrailBlazer I (2001-2006)

Fastener Tightening Specifications

Application	Specification
Application	Metric	English
Air Cleaner Outlet Duct Bolt	10 N.m	89 lb in
Air Cleaner Outlet Duct Clamp	7 N.m	62 lb in
Air Conditioning Belt Tensioner Bolt	50 N.m	37 lb ft
Air Conditioning Bracket Bolt	50 N.m	37 lb ft
Battery Cable Channel Bolt	12 N.m	106 lb in
Brake Hose Retaining Bolt	25 N.m	18 lb ft
Camshaft Retainer Bolts	25 N.m	18 lb ft
Camshaft Sensor Bolt	25 N.m	18 lb ft
Camshaft Sprocket Bolts	35 N.m	26 lb ft
Connecting Rod Bolts - First Pass	20 N.m	15 lb ft
Connecting Rod Bolts - Final Pass	75 degrees
Coolant Temperature Gage Sensor	20 N.m	15 lb ft
Crankshaft Balancer Bolt - Installation Pass to Ensure the Balancer is Completely Installed	330 N.m	240 lb ft
Crankshaft Balancer Bolt - First Pass - Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes	50 N.m	37 lb ft
Crankshaft Balancer Bolt - Final Pass	140 degrees
Crankshaft Bearing Cap Bolts - Inner Bolts - First Pass in Sequence	20 N.m	15 lb ft
Crankshaft Bearing Cap Bolts - Inner Bolts - Final Pass in Sequence	80 degrees
Crankshaft Bearing Cap Bolts - Outer Bolts - First Pass in Sequence	20 N.m	15 lb ft
Crankshaft Bearing Cap Bolts - Outer Bolts - Final Pass in Sequence	51 degrees
Crankshaft Bearing Cap Side Bolts	25 N.m	18 lb ft
Crankshaft Oil Deflector Nuts	25 N.m	18 lb ft
Crankshaft Position Sensor Bolt	25 N.m	18 lb ft
Cylinder Head Bolts - First Pass all M11 Bolts in Sequence	30 N.m	22 lb ft
Cylinder Head Bolts - Second Pass all M11 Bolts in Sequence	90 degrees
Cylinder Head Bolts - Final Pass all M11 Bolts in Sequence -Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder	90 degrees
Cylinder Head Bolts - Final Pass M11 Medium Length Bolts at the Front and Rear of Each Cylinder Head in Sequence	50 degrees
Cylinder Head Bolts - M8 Inner Bolts in Sequence	30 N.m	22 lb ft
Cylinder Head Coolant Plug	20 N.m	15 lb ft
Differential Bolt	85 N.m	63 lb ft
Drive Belt Idler Pulley Bolt	50 N.m	37 lb ft
Drive Belt Tensioner Bolt	50 N.m	37 lb ft
Engine Block Coolant Drain Plugs	60 N.m	44 lb ft
Engine Block Heater	40 N.m	30 lb ft
Engine Block Oil Gallery Plugs	60 N.m	44 lb ft
Engine Coolant Air Bleed Pipe and Cover Bolts	12 N.m	106 lb in
Engine Flywheel Bolts - First Pass	20 N.m	15 lb ft
Engine Flywheel Bolts - Second Pass	50 N.m	37 lb ft
Engine Flywheel Bolts - Final Pass	100 N.m	74 lb ft
Engine Front Cover Bolts	25 N.m	18 lb ft
Engine Harness Bracket Nut	10 N.m	69 lb in
Engine Mount Bracket Spacer	50 N.m	37 lb ft
Engine Mount Frame Bracket	100 N.m	74 lb ft
Engine Mount Nuts	50 N.m	37 lb ft
Engine Mount-to-Engine Bolts	50 N.m	37 lb ft
Engine Rear Cover Bolts	25 N.m	18 lb ft
Engine Service Lift Bracket M10 Bolts	50 N.m	37 lb ft
Engine Service Lift Bracket M8 Bolt	25 N.m	18 lb ft
Engine Shield Bolt	20 N.m	15 lb ft
Engine Sight Shield Bolt	10 N.m	89 lb in
Engine Sight Shield Retainer Bolt	5 N.m	44 lb in
Engine Valley Cover Bolts	25 N.m	18 lb ft
Evaporative Emission - EVAP - Purge Solenoid Bolt	10 N.m	89 lb in
Exhaust Manifold Bolts - First Pass	15 N.m	11 lb ft
Exhaust Manifold Bolts - Final Pass	25 N.m	18 lb ft
Exhaust Manifold Heat Shield Bolts	9 N.m	60 lb in
Front Shock Upper Retaining Nut	100 N.m	74 lb ft
Fuel Rail Bolts	10 N.m	69 lb in
Fuel Rail Crossover Tube Bolts	3.8 N.m	34 lb in
Fuel Rail Stop Bracket Bolt	50 N.m	37 lb ft
Ignition Coil-to-Bracket Bolls	8 N.m	71 lb in
Ignition Coil Bracket-to-Valve Rocker Arm Cover Bolts	12 N.m	106 lb in
Intake Manifold Bolts - First Pass in Sequence	5 N.m	44 lb in
Intake Manifold Bolts - Final Pass in Sequence	10 N.m	89 lb In
Intake Manifold Wiring Harness Stud	10 N.m	89 lb in
J 42386-A Bolt	50 N.m	37 lb ft
Knock Sensors	20 N.m	15 lb ft
Oil Filter	30 N.m	22 lb ft
Oil Filter Fitting	55 N.m	40 lb ft
Oil Level Indicator Tube Bolt	25 N.m	18 lb ft
Oil Pan Baffle Bolts	12 N.m	106 lb in
Oil Pan Closeout Cover Bolt - Left Side	9 N.m	80 lb in
Oil Pan Closeout Cover Bolt - Right Side	9 N.m	80 lb in
Oil Pan Cover Bolts	12 N.m	106 lb in
Oil Pan Drain Plug	25 N.m	18 lb ft
Oil Pan M8 Bolts - Oil Pan-to-Engine Block and Oil Pan-to-Front Cover	25 N.m	18 lb ft
Oil Pan M6 Bolts - Oil Pan-to-Rear Cover	12 N.m	106 lb In
Oil Pressure Sensor	20 N.m	15 lb ft
Oil Pump-to-Engine Block Bolts	25 N.m	18 lb ft
Oil Pump Cover Bolts	12 N.m	106 lb in
Oil Pump Relief Valve Plug	12 N.m	106 lb in
Oil Pump Screen Nuts	25 N.m	18 lb ft
Oil Pump Screen-to-Oil Pump Bolt	12 N.m	106 lb in
Propeller Shaft Yoke Retainer Bolt	20 N.m	15 lb ft
Spark Plugs - New Cylinder Heads	20 N.m	15 lb ft
Spark Plugs - All Subsequent Installations	15 N.m	11 lb ft
Throttle Body Nuts	10 N.m	89 lb In
Throttle Body Studs	6 N.m	53 lb in
Transmission Bell housing Bolt	50 N.m	37 lb ft
Transmission Oil Cooler Line Bracket Bolt	9 N.m	80 lb in
Upper Ball Joint Pinch Bolt	40 N.m	30 lb ft
Upper Engine Mount Bracket	50 N.m	37 lb ft
Valve Lifter Guide Bolts	12 N.m	106 lb in
Valve Rocker Arm Bolts	30 N.m	22 lb ft
Valve Rocker Arm Cover Bolts	12 N.m	106 lb in
Water Inlet Housing Bolts	15 N.m	11 lb ft
Water Pump Bolts - First Pass	15 N.m	11 lb ft
Water Pump Bolts - Final Pass	30 N.m	22 lb ft
Water Pump Cover Bolts	15 N.m	11 lb ft

FASTENER TIGHTENING SPECIFICATIONS

Engine Mechanical Specifications

Application		Specification
Application		Metric	English
General
	Engine Type	V8
	Displacement	5.3L	325 CID
	RPO	LM4
	VIN	P
	Bore	96.0-96.018 mm	3.779-3.78 in
	Stroke	92.0 mm	3.622 in
	Compression Ratio	9.45:1
	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 - Mesured 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	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 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	120.2 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	5.20 Liters	5.5 Quarts
	Oil Pressure - Minimum - Hot	41 kPa at 1,000 engine RPM 124 kPa at 2,000 engine RPM 165 kPa at 4,000 engine RPM	6 psig at 1,000 engine RPM
18 psig at 2,000 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	0.036-0.016 mm	0.0014-0.0006 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

Scheme 1

Scheme 1: Sealers, Adhesives, and Lubricants

Scheme 2

Scheme 2: Engine Block - Front View

Scheme 3

Scheme 4

Scheme 4: Engine Block - Rear View

Scheme 5

Scheme 6

Scheme 6: Engine Block - Left Side View

Scheme 7

Scheme 8

Scheme 9

Scheme 9: Engine Block - Right Side View

Scheme 10

Scheme 11

Scheme 12

Scheme 12: Engine Block - Bottom View

Scheme 13

Scheme 14

Scheme 15

Scheme 15: Engine Block - Top View

Scheme 16

Scheme 17

Scheme 17: Cylinder Head - Top View

Scheme 18

Scheme 19

Scheme 19: Cylinder Head - End View

Scheme 20

Scheme 21

Scheme 21: Cylinder Head - Exhaust Manifold Deck View

Scheme 22

Scheme 23

Scheme 23: Cylinder Head - Intake Manifold Deck View

Scheme 24

Scheme 25

Scheme 25: Intake Manifold/Upper Engine

Scheme 26

Scheme 26: Cylinder Head/Upper Engine

Scheme 27

Scheme 27: Lower Front of Engine

Scheme 28

Scheme 28: Lower Engine Assembly

Scheme 29

Scheme 29: Cylinder Head Assembly - Aluminum

Scheme 30

Scheme 30: Oil Pump Assembly

Scheme 31

Scheme 31: 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 5.3 liter engine 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-188498-S32902127152005090700000) and «THREAD REPAIR SPECIFICATIONS»(ref-188498-S32236017312005090700000) .

Changed Engine Specifications

Engine specification table contents and format have been commonized.

Engine Mechanical - 5.3L: Specifications Chevrolet TrailBlazer I