Engine Mechanical Specifications

2004 Oldsmobile Bravada AWDSECTION Engine Mechanical Specifications
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE MECHANICAL SPECIFICATIONS

Application Specification
Metric English
General Data
  Engine Type 60 degree V-6
  Displacement 3.4L 204 cu in
  RPO LA1
  VIN E
  Bore 92 mm 3.62 in
  Stroke 84 mm 3.31 in
  Compression Ratio 9.6:1
  Firing Order 1-2-3-4-5-6
  Spark Plug Gap 1.52 mm 0.60 in
Block
  Camshaft Bearing Bore Diameter - Front and Rear 51.03-51.08 mm 2.009-2.011 in
  Camshaft Bearing Bore Diameter - Middle #2, #3 50.77-50.82 mm 1.999-2.001 in
  Crankshaft Main Bearing Bore Diameter 72.1535-72.0695 mm 2.840-2.841 in
  Crankshaft Main Bearing Bore Out-of-Round 0.008 mm 0.00031 in
  Cylinder Bore Diameter - Production 92.020-92.038 mm 3.622-3.623 in
  Cylinder Bore Diameter - Service 92.020-92.038 mm 3.622-3.623 in
  Cylinder Bore Out-of-Round - Diametral - Production 0.020 mm 0.0008 in
  Cylinder Bore Out-of-Round - Diametral - Service 0.025 mm 0.001 in
  Cylinder Bore Taper - Production 0.020 mm 0.0008 in
  Cylinder Bore Taper - Service 0.025 mm 0.001 in
  Cylinder Head Deck Height 224 mm 8.818 in
  Cylinder Head Deck Surface Flatness 0.05 mm per 152 mm 0.0019 in per 6 in
  Valve Lifter Bore Diameter 21.417-21.455 mm 0.843-0.844 in
Camshaft
  Camshaft Bearing Inside Diameter 47.523-47.549 mm 1.871-1.872 in
  Camshaft Journal Diameter 47.45-47.48 mm 1.868-1.869 in
  Camshaft Journal Out-of-Round 0.025 mm 0.001 in
  Camshaft Lobe Lift - Exhaust 6.9263 mm 0.2727 in
  Camshaft Lobe Lift - Intake 6.9263 mm 0.2727 in
Cooling System
  Capacity Engine RPM 12.4 liters 13.1 quarts
  Thermostat Full Open Temperature 195 degrees
Connecting Rod
  Connecting Rod Bearing Clearance 0.18-0.062 mm 0.0007-0.017 in
  Connecting Rod Bore Diameter 53.962-53.978 mm 2.124-2.125 in
  Connecting Rod Bore Out-of-Round 0.008 mm 0.0002 in
  Connecting Rod Length - Center to Center 144.75-144.81 mm 5.69-5.70 in
  Connecting Rod Side Clearance 0.25-0.37 mm 0.010-0.015 in
Crankshaft
  Connecting Rod Journal Diameter 50.768-50.784 mm 1.9987-1.9994 in
  Connecting Rod Journal Out-of-Round 0.005 mm 0.0002 in
  Connecting Rod Journal Taper 0.005 mm 0.0002 in
  Connecting Rod Journal Width 21.92-22.08 mm 0.863-0.869 in
  Crankshaft End Play 0.060-0.210 mm 0.0024-0.0083 in
  Crankshaft Main Bearing Journal Width 23.9-24.1 mm 0.941-0.949 in
  Crankshaft Main Bearing Clearance - Except #3 0.019-0.064 mm 0.0008-0.0025 in
  Crankshaft Main Bearing Clearance - #3 Thrust Bearing 0.032-0.077 mm 0.0012-0.0030 in
  Crankshaft Main Journal Diameter 67.239-67.257 mm 2.6473-2.6483 in
  Crankshaft Main Journal Out-of-Round 0.005 mm 0.0002 in
  Crankshaft Main Journal Taper 0.005 mm 0.0002 in
  Crankshaft Rear Flange Runout 0.04 mm 0.0016 in
Cylinder Head
  Combustion Chamber Depth - at Measurement Point 2.2 mm 0.087 in
  Surface Finish - Maximum 2.8 RA
  Surface Flatness - Block Deck 0.08 mm per 152 mm 0.003 in per 6 in
  Surface Flatness - Exhaust Manifold Deck 0.1 mm 0.004 in
  Surface Flatness - Intake Manifold Deck 0.1 mm 0.004 in
  Valve Guide Bore - Exhaust 8.01 mm 0.315 in
  Valve Guide Bore - Intake 8.01 mm 0.315 in
  Valve Guide Installed Height 16.6 mm 0.654 in
Lubrication System
  Oil Capacity - with Filter 4.3 liters 4.5 quarts
  Oil Capacity - without Filter 3.8 liters 4.0 quarts
  Oil Pressure - 1850 RPM 414 kPa 60 psi
Oil Pump
  Gear Diameter 38.05-38.10 mm 1.498-1.500 in
  Gear Pocket - Depth 30.52-30.58 mm 1.202-1.204 in
  Gear Pocket - Diameter 38.176-38.226 mm 1.503-1.505 in
  Gears Lash 0.094-0.195 mm 0.0037-0.0077 mm
  Relief Valve-to-Bore Clearance 0.038-0.089 mm 0.0015-0.0035 in
Piston Ring End Gap
  First Compression Ring 0.15-0.36 mm 0.006-0.014 in
  Second Compression Ring 0.48-0.74 mm 0.0188-0.0291 in
  Oil Control Ring 0.25-0.77 mm 0.0098-0.0303 in
Piston Ring to Groove Clearance
  First Compression Ring 0.04-0.086 mm 0.002-0.0033 in
  Second Compression Ring 0.04-0.08 mm 0.002-0.0031 in
  Oil Control Ring 0.07-0.095 mm 0.0028-0.0037 in
Piston Ring Thickness
  First Compression Ring 1.164-1.190 mm 0.046-0.047 in
  Second Compression Ring 1.460-1.490 mm 0.0574-0.0586 in
  Oil Control Ring - Maximum 2.960 mm 0.116 in
Piston
  Piston Diameter - production - cylinder 1-4 91.985-92.003 mm 3.621-3.622 in
  Piston Diameter - service limit - cylinder 1-4 91.945 mm 3.619 in
  Piston Diameter - production - cylinder 5-6 91.99-92.028 mm 3.621-3.623 in
  Piston Diameter - service limit - cylinder 5-6 91.945 mm 3.619 in
  Piston Pin Bore Diameter 23.005-23.010 mm 0.9057-0.9059 in
  Piston Ring Groove Width - First 1.23-1.25 mm 0.048-0.049 in
  Piston Ring Groove Width - Second 1.53-1.55 mm 0.060-0.061 in
  Piston Ring Groove Width - Oil Control 3.03-3.055 mm 0.119-0.120 in
  Piston to Bore Clearance - production - 1-4 0.17-0.053 mm 0.0006-0.0020 in
  Piston to Bore Clearance - service limit-- 1-4 0.093 mm 0.0036 in
  Piston to Bore Clearance - production - 5-6 -0.008-0.048 mm -0.0003-0.0018 in
  Piston to Bore Clearance - service limit-- 5-6 0.093 mm 0.0036 in
Pin
  Piston Pin Clearance to Connecting Rod Bore - Press Fit -0.047 to -0.019 mm -0.0019 to -0.0007 in
  Piston Pin Clearance to Piston Pin Bore 0.008-0.016 mm 0.00031-0.00063 in
  Piston Pin Diameter 22.994-22.997 mm 0.9053-0.9054 in
Valves
  Valve Face Angle 45 degrees
  Valve Seat Angle 46 degrees
  Valve Seat Depth - Intake - from deck face 7.9-8.1 mm 0.311-0.318 in
  Valve Seat Depth - Exhaust - from deck face 8.9-9.1 mm 0.350-0.358 in
  Valve Seat Runout 0.037 mm 0.0015 in
  Valve Seat Width - Intake 1.55-1.80 mm 0.061-0.071 in
  Valve Seat Width - Exhaust 1.70-2.0 mm 0.067-0.079 in
  Valve Stem-to-Guide Clearance 0.026-0.068 mm 0.0010-0.0027 in
Valve Lifters/Push Rods
  Push Rod Length - Intake 146.0 mm 5.75 in
  Push Rod Length - Exhaust 152.5 mm 6.0 in
Valve Springs
  Valve Spring Free Length 48.5 mm 1.89 in
  Valve Spring Installed Height 43.2 mm 1.701 in
  Valve Spring Load - Closed 320 N 43.2 mm 75 lb 1.701 in
  Valve Spring Load - Open 1036 N 32 mm 230 lb 1.260 in
  Valve Spring Total Number of Coils 6.55
RENDER: 1.0x

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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.