Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 823 (ENGINE MECHANICAL - 4.3L (UNIT REPAIR))SPECIFICATIONSENGINE MECHANICAL SPECIFICATIONS

2004 Oldsmobile Bravada AWD

Engine Mechanical Specifications

2004 Oldsmobile Bravada AWDSECTION Engine Mechanical Specifications

WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE MECHANICAL SPECIFICATIONS

Application		Specification
Application		Metric	English
General Data
	Engine Type	V6
	RPO Code	L35/LU3
	VIN Code	W/X
	Displacement	4.3 L	262 CID
	Bore	101.60 mm	4.012 in
	Stroke	88.39 mm	3.480 in
	Compression Ratio	9.2:1
	Firing Order	1-6-5-4-3-2
	Spark Plug Gap	1.52 mm	0.060 in
		42 kPa at 1,000 RPM	6 psig at 1,000 RPM
	Oil Pressure - Minimum - at Normal Operating Temperature	125 kPa at 2,000 RPM	18 psig at 2,000 RPM
		166 kPa at 4,000 RPM	24 psig at 4,000 RPM
Balance Shaft
	Rear Bearing Journal Clearance	0.050-0.088 mm	0.0020-0.0035 in
	Rear Bearing Journal Diameter	38.085-38.100 mm	1.4994-1.500 in
Camshaft
	End Play	0.0254-0.2286 mm	0.0010-0.0090 in
	Journal Diameter	47.440-47.490 mm	1.8677-1.8696 in
	Journal Diameter Out-of-Round	0.025 mm - Maximum	0.0010 in - Maximum
	Lobe Lift - Exhaust	7.20-7.30 mm	0.283-0.287 in
	Lobe Lift - Intake	6.97-7.07 mm	0.274-0.278 in
	Runout	0.065 mm	0.0026 in
Connecting Rod
	Connecting Rod Bearing Clearance - Production	0.038-0.078 mm	0.0015-0.0031 in
	Connecting Rod Bearing Clearance - Service	0.025-0.063 mm	0.0010-0.0025 in
	Connecting Rod Journal Diameter	57.116-57.148 mm	2.2487-2.2497 in
	Connecting Rod Journal Out-of-Round - Production	0.007 mm - Maximum	0.0002 in - Maximum
	Connecting Rod Journal Out-of-Round - Service	0.025 mm - Maximum	0.0010 in - Maximum
	Connecting Rod Journal Taper - Production	0.00508 mm - Maximum	0.00030 in - Maximum
	Connecting Rod Journal Taper - Service	0.025 mm - Maximum	0.0010 in - Maximum
	Connecting Rod Side Clearance	0.15-0.44 mm	0.006-0.017 in
Crankshaft
	Crankshaft Bearing Clearance - Journal #1-Production	0.02-0.508 mm	0.0008-0.0020 in
	Crankshaft Bearing Clearance - Journal #2, #3, and #4-Production	0.028-0.058 mm	0.0011-0.0023 in
	Crankshaft Bearing Clearance - Journal #1-Service	0.0254-0.05 mm	0.0010-0.0020 in
	Crankshaft Bearing Clearance - Journal #2, #3, and #4-Service	0.025-0.063 mm	0.0010-0.0250 in
	Crankshaft End Play	0.050-0.20 mm	0.002-0.008 in
	Crankshaft Journal Diameter - Journal #1	62.199-62.217 mm	2.4488-2.4495 in
	Crankshaft Journal Diameter - Journal #2 and #3	62.191-62.215 mm	2.4485-2.4494 in
	Crankshaft Journal Diameter - Journal #4	62.179-62.203 mm	2.4480-2.4489 in
	Crankshaft Journal Out-of-Round - Production	0.005 mm - Maximum	0.0002 in - Maximum
	Crankshaft Journal Out-of-Round - Service	0.025 mm - Maximum	0.0010 in - Maximum
	Crankshaft Journal Taper - Production	0.007 mm - Maximum	0.0003 in - Maximum
	Crankshaft Runout	0.025 mm - Maximum	0.0010 in - Maximum
Cylinder Bore
	Diameter	101.618-101.643 mm	4.0007-4.0017 in
	Out-of-Round - Production	0.0127 mm - Maximum	0.00050 in - Maximum
	Out-of-Round - Service	0.05 mm - Maximum	0.002 in - Maximum
	Taper - Production Relief Side	0.025 mm - Maximum	0.0010 in - Maximum
	Taper - Production Thrust Side	0.012 mm - Maximum	0.0005 in - Maximum
	Taper - Service	0.025 mm - Maximum	0.0010 in - Maximum
Cylinder Head
	Surface Flatness	0.10 mm - Maximum	0.004 in - Maximum
Exhaust Manifold
	Surface Flatness - Flange to Flange	0.25 mm - Maximum	0.010 in - Maximum
	Surface Flatness - Individual Flange	0.05 mm - Maximum	0.002 in - Maximum
Intake Manifold
	Surface Flatness	0.10 mm - Maximum	0.004 in - Maximum
Oil Pan
	Oil Pan Alignment at Rear of Engine Block	0.3 mm - Maximum	0.011 in - Maximum
Piston
	Piston Bore Clearance - Production	0.018-0.061 mm	0.0007-0.0024 in
	Piston Bore Clearance - Service	0.075 mm - Maximum	0.0029 in - Maximum
Piston Pin
	Clearance in Piston - Production	0.013-0.023 mm	0.0005-0.0009 in
	Clearance in Piston - Service	0.025 mm - Maximum	0.0010 in - Maximum
	Diameter	23.545-23.548 mm	0.9270-0.9271 in
	Fit in Connecting Rod	0.012-0.048 mm - Interference	0.0005-0.0019 in - Interference
Piston Rings - End Gap Measured in Cylinder Bore
	Piston Compression Ring Gap - Production-Top Groove	0.25-0.40 mm	0.010-0.016 in
	Piston Compression Ring Gap - Production-2nd Groove	0.38-0.58 mm	0.015-0.023 in
	Piston Compression Ring Gap - Service-Top Groove	0.25-0.50 mm	0.010-0.020 in
	Piston Compression Ring Gap - Service-2nd Groove	0.38-0.80 mm	0.015-0.031 in
	Piston Compression Ring Groove Clearance - Production-Top Groove	0.030-0.070 mm	0.0012-0.0027 in
	Piston Compression Ring Groove Clearance - Production-2nd Groove	0.040-0.080 mm	0.0015-0.0031 in
	Piston Compression Ring Groove Clearance - Service	0.030-0.085 mm	0.0012-0.0033 in
	Piston Oil Ring Gap - Production	0.25-0.76 mm	0.010-0.029 in
	Piston Oil Ring Gap - Service	0.005-0.090 mm	0.0002-0.0035 in
	Piston Oil Ring Groove Clearance - Production	0.046-0.196 mm	0.0018-0.0077 in
	Piston Oil Ring Groove Clearance - Service	0.046-0.200 mm	0.0018-0.0079 in
Valve System
	Valve Face Angle	45 degrees
	Valve Head Edge Margin	0.79 mm - Minimum	0.031 in - Minimum
	Valve Lash	Net Lash-No Adjustment
	Valve Lift - Exhaust	10.879 mm	0.4280 in
	Valve Lift - Intake	10.527 mm	0.4140 in
	Valve Lifter	Hydraulic Roller Type
	Valve Rocker Arm	Roller Pivot Type
	Valve Rocker Arm Ratio	1.5:1
	Valve Seat Angle	46 degrees
	Valve Seat Runout	0.05 mm - Maximum	0.002 in - Maximum
	Valve Seat Width - Exhaust	1.651-2.489 mm	0.065-0.098 in
	Valve Seat Width - Intake	1.016-1.651 mm	0.040-0.065 in
	Valve Spring Free Length	51.3 mm	2.02 in
	Valve Spring Installed Height - Exhaust	42.92-43.43 mm	1.670-1.700 in
	Valve Spring Installed Height - Intake	42.92-43.43 mm	1.670-1.700 in
	Valve Spring Pressure - Closed	338-374 N at 43.2 mm	76-84 lb at 1.70 in
	Valve Spring Pressure - Open	832-903 N at 32.3 mm	187-203 lb at 1.27 in
	Valve Stem Clearance - Exhaust-Production	0.025-0.069 mm	0.0010-0.0027 in
	Valve Stem Clearance - Exhaust-Service	0.025-0.094 mm	0.0010-0.0037 in
	Valve Stem Clearance - Intake-Production	0.025-0.069 mm	0.0010-0.0027 in
	Valve Stem Clearance - Intake-Service	0.025-0.094 mm	0.0010-0.0037 in
	Valve Stem Oil Seal Installed Height - Measured from the Top of the Large Diameter Valve Guide Bevel to the Bottom of the Valve Stem Oil Seal	1-2 mm	0.03937-0.07874 in

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.