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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1063 (ENGINE MECHANICAL - 6.6L (LB7) (INTRODUCTION))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 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Engine Mechanical Specifications

Application Specification
Metric English
General
  • Engine Type
 90 degree V-8
  • Displacement
 6.6 Liter 402 cu in
  • RPO
 LB7
  • Bore
 103 mm 4.0551 in
  • Stroke
 99 mm 3.8976 in
  • Compression Ratio
 17.5:1
  • Engine Compression Test - Minimum
 2069 KPa 300 psi
  • Idle Speed
 680 RPM
  • Firing Order
 1-2-7-8-4-5-6-3
Block
  • Cylinder Bore Diameter - Service Limits
 103.11 mm 4.0594 in
  • Cylinder Bore Diameter - Production Value
 103.0-103.014 mm 4.0551-4.0557 in
  • Cylinder Bore Out-of-Round - Production Value
 0.015 mm 0.0006 in
  • Cylinder Bore Taper - Production Value
 0.015 mm 0.0006 in
Camshaft
  • Camshaft Bearing Inside Diameter - Service Limit
 61.07 mm 2.4043 in
  • Camshaft Bearing Inside Diameter - Production Value
 61.00-61.03 mm 2.4016-2.4028 in
  • Camshaft End Play - Service Limit
 0.2 mm 0.0079 in
  • Camshaft Journal Diameter - Service Limit
 60.92 mm 2.3984 in
  • Camshaft Journal Diameter - Production Value
 60.932-60.962 mm 2.3990-2.4001 in
  • Camshaft Lobe Lift - Exhaust - Production Value
 5.907 mm 0.2326 in
  • Camshaft Lobe Lift - Intake - Production Value
 7.273 mm 0.2863 in
  • Camshaft Runout - Service Limit
 0.05 mm 0.0020 in
Cooling System
  • Capacity @ Engine RPM
 270 L/min @ 3172 RPM
  • Thermostat Full Open Temperature
 110 degrees C 230 degrees F
  • Turbocharger Coolant Bypass Valve
 60 degrees C 140 degrees F
Connecting Rod
  • Connecting Rod Bearing Clearance - Service Limit
 0.10 mm 0.0039 in
  • Connecting Rod Bearing Clearance - Production Value
 0.036-0.077 mm 0.0014-0.0030 in
  • Connecting Rod Bore Diameter - Bearing End - Production Value
 62.958-62.979 mm 2.4789-2.4795 in
  • Connecting Rod Bore Diameter - Pin End - Service Limit
 34.53 mm 1.3594 in
  • Connecting Rod Bore Diameter - Pin End - Production Value
 34.512-34.522 mm 1.3587-1.3591 in
  • Connecting Rod Length
 163.0 mm 6.42 in
  • Connecting Rod Side Clearance - Service Limit
 0.54 mm 0.0213 in
  • Connecting Rod Side Clearance - Production Value
 0.31-0.49 mm 0.0122-0.0193 in
Crankshaft
  • Connecting Rod Journal Diameter - Service Limit
 62.88 mm 2.4756 in
  • Connecting Rod Journal Diameter - Production Value
 62.902-62.922 mm 2.4764-2.4772 in
  • Crankshaft End Play - Service Limit
 0.54 mm 0.0213 in
  • Crankshaft End Play - Production Value
 0.04-0.205 mm 0.0016-0.0081 in
  • Crankshaft Main Bearing Clearance - Service Limit
 0.014 mm 0.0055 in
  • Crankshaft Main Bearing Clearance - Production Value
 0.037-0.072 mm 0.0015-0.0028 in
  • Crankshaft Main Journal Diameter - Service Limit
 79.89 mm 3.1453 in
  • Crankshaft Main Journal Diameter - Production Value
 79.905-79.925 mm 3.1459-3.1466 in
  • Crankshaft Runout - Service Limit
 0.44 mm 0.0173 in
  • Crankshaft Runout - Production Value
 0.05 mm 0.0020 in
Cylinder Head
  • Surface Flatness - Block Deck - Service Limit
 0.2 mm 0.0079 in
  • Surface Flatness - Block Deck - Production Value
 0.075 mm 0.0030 in
  • Surface Flatness - Exhaust Manifold Deck - Production Value
 0.1 mm 0.0039 in
  • Surface Flatness - Intake Manifold Deck - Production Value
 0.1 mm 0.0039 in
Exhaust Manifold
  • Surface Flatness- Production Value
 0.3 mm 0.0118 in
Intake Manifold
  • Surface Flatness - Production Value
 0.3 mm 0.0118 in
Lubrication System
  • Oil Capacity - with Filter
 10 qt 9.5 L
  • Oil Capacity - without Filter
 9.2 qt 8.7 L
  • Oil Pressure - Minimum- Hot - at idle
 98 KPa 14 psi
  • Oil Pressure - Minimum - 1800 RPM
 294 KPa 42 psi
  • Oil Relief Valve Opening Pressure
 441 KPa 64 psi
  • Piston Cooling Jet Valve Opening Pressure
 196 KPa 29 psi
Oil Pump
  • Gear Shaft Outside Diameter - Drive - Service Limit
 19.86 mm 0.7819 in
  • Gear Shaft Outside Diameter - Drive - Production Value
 19.947-19.960 mm 0.7853-0.7858 in
  • Gear Shaft Outside Diameter - Driven - Service Limit
 19.86 mm 0.7819 in
  • Gear Shaft Outside Diameter - Driven - Production Value
 19.947-19.960 mm 0.7853-0.7858 in
  • Gear Shaft-to-Bushing - Service Limit Clearance
 0.14 mm 0.0055 in
  • Gear-to-Cover Clearance - Drive/Driven - Service Limit
 0.109 mm 0.0043 in
  • Gear-to-Cover Clearance - Drive/Driven - Production Value
 0.064-0.109 mm 0.0025-0.0043 in
  • Gear-to-Housing Clearance - Drive/Driven - Service Limit
 0.22 mm 0.0087 in
  • Gear-to-Housing Clearance - Drive/Driven - Production Value
 0.125-0.221 mm 0.0049-0.0087 in
Piston Rings
  • Piston Ring End Gap-First Compression Ring - Service Limit
 1.37 mm 0.0539 in
  • Piston Ring End Gap-First Compression Ring - Production Value
 0.3-0.45 mm 0.0118-0.0177 in
  • Piston Ring End Gap-Second Compression Ring - Service Limit
 1.35 mm 0.0531 in
  • Piston Ring End Gap-Second Compression Ring - Production Value
 0.50-0.65 mm 0.0197-0.0256 in
  • Piston Ring End Gap-Oil Control Ring - Service Limit
 1.20 mm 0.0472 in
  • Piston Ring End Gap-Oil Control Ring - Production Value
 0.15-0.35 mm 0.0059-0.0138 in
  • Piston Ring to Groove Clearance-First Compression Ring - Service Limit
 0.26 mm 0.0102 in
  • Piston Ring to Groove Clearance-First Compression Ring - Production Value
 0.08-0.17 mm 0.0030-0.0067 in
  • Piston Ring to Groove Clearance-Second Compression Ring - Service Limit
 0.10 mm 0.0039 in
  • Piston Ring to Groove Clearance-Second Compression Ring - Production Value
 0.01-0.03 mm 0.0004-0.0012 in
  • Piston Ring to Groove Clearance-Oil Control Ring - Service Limit
 0.12 mm 0.0047 in
  • Piston Ring to Groove Clearance-Oil Control Ring - Production Value
 0.01-0.03 mm 0.0004-0.0012 in
Pistons and Pins
  • Piston-Piston Diameter
 102.948-102.960 mm 4.0531-4.0535 in
  • Piston Diameter - Production value
 102.898-102.910 mm 4.0510-4.0516 in
  • Piston To Bore Clearance - Production value
 0.090-0.120 mm 0.0035-0.0047 in
  • Piston-Piston Pin Bore Diameter
 34.504-34.512 mm 1.3584-1.3587 in
  • Pin-Piston Pin Clearance to Piston Pin Bore - Service Limit
 0.017 mm 0.0007 in
  • Pin-Piston Pin Clearance to Piston Pin Bore - Production Value
 0.004-0.017 mm 0.0002-0.0007 in
  • Pin-Piston Pin Diameter - Service Limit
 34.45 mm 1.3563 in
  • Pin-Piston Pin Diameter - Production Value
 34.495-34.5 mm 1.3581-1.3583 in
Starter
  • Rated Output
 3.5 KW
Turbocharger
  • Axial Play
 0.11 mm 0.0043 in
  • Radial Play
 0.20 mm 0.0079 in
Valve System
  • Valves-Valve Face Angle - Production Value
 45 degrees
  • Valves-Valve Face Runout
 - -
  • Valves-Valve Face Width - Service Limit
 2.5 mm 0.0984 in
  • Valves-Valve Face Width - Production Value
 2.1 mm 0.0827 in
  • Valves-Valve Head Diameter - Exhaust
 31.0 mm 1.22 in
  • Valves-Valve Head Diameter - Intake
 33.0 mm 1.30 in
  • Valves-Valve Seat Angle
 45 degrees
  • Valves-Valve Stem Diameter
 7.0 mm 0.28 in
  • Valves-Valve Stem Oil Seal Installed Height
 6.05 mm 0.2382 in
  • Valves-Valve Stem-to-Guide Clearance - Service Limit
 0.20 mm 0.0079 in
  • Valves-Valve Stem-to-Guide Clearance - Exhaust - Production Value
 0.038-0.071 mm 0.0015-0.0028 in
  • Valves-Valve Stem-to-Guide Clearance - Intake - Production Value
 0.030-0.063 mm 0.0012-0.0025 in
  • Valves-Valve Stem-to-Guide Clearance
 0.20 mm 0.0079 in
  • Valve Lifters/Push Rods-Push Rod Straightness
 0.8 mm 0.0315 in
  • Rocker Arms-Valve Rocker Arm Bore Diameter
 22.010-22.035 mm 0.8665-0.8675 in
  • Rocker Arms-Valve Rocker Arm Bore-to-Shaft Clearance - Service Limit
 0.20 mm 0.0079 in
  • Rocker Arms-Valve Rocker Arm Bore-to-Shaft Clearance - Production Value
 0.010-0.056 mm 0.0004-0.0022 in
  • Rocker Arms-Valve Rocker Arm Ratio - Exhaust
 1.69:1
  • Rocker Arms-Valve Rocker Arm Ratio - Intake
 1.36:1
  • Rocker Arms-Valve Rocker Arm Shaft Diameter - Service Limit
 21.85 mm 0.8602 in
  • Rocker Arms-Valve Rocker Arm Shaft Diameter - Production Value
 21.979-22.000 mm 0.8653-0.8661 in
  • Valve Springs-Valve Spring Free Length - Production Value
 56.6 mm 2.2283 in
  • Valve Springs-Valve Spring Installed Height - Production Value
 41 mm 1.6142 in
  • Valve Springs-Valve Spring Load - Exhaust - Service Limit
 275 N at 41 mm 61.8 lb at 1.61 in
  • Valve Springs-Valve Spring load - Exhaust - Production Value
 315-363 N at 41 mm 71-81.6 lb at 1.61 in
  • Valve Springs-Valve Spring Load - Intake - Service Limit
 306 N at 41 mm 68.8 lb at 1.61 in
  • Valve Springs-Valve Spring Load - Intake - Production Value
 315-363 N at 41 mm 71-81.6 lb at 1.61 in
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.