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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 741 (ENGINE MECHANICAL - 8.1L (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 Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
G01675266

Application Specification
Metric English
General Data
  Engine Type V-8
  Displacement 8.1 L 496 CID
  RPO L18
  VIN C/K/G/C3500HD G
  VIN Medium Duty E
  Bore 107.950 mm 4.250 in
  Stroke 111.00 mm 4.370 in
  Compression Ratio 9.1:1
  Firing Order 1-8-7-2-6-5-4-3
  Spark Plug Gap 1.52 mm 0.060 in
Cylinder Head
  Surface Flatness 0.050 mm 0.002 in
  Maximum Cylinder Head Block Deck Resurfacing 0.3048 mm 0.012 in
Exhaust Manifold
  Surface Flatness 0.254 mm 0.010 in
Lubrication System
  Oil Capacity without Filter Change 5.7 L 6 Qts
  Oil Pressure (Minimum) 34 kPa @ 1,000 RPM 5 psi @ 1,000 RPM
  Oil Pressure (Minimum) 69 kPa @ 2,000 RPM 10 psi @ 2,000 RPM
  Oil Filter System Full Flow
  Oil Pump Type Gear Driven
Cylinder Bore
  Diameter - Production 107.950-107.968 mm 4.2500-4.2507 in
  Diameter - Service 107.940-107.990 mm 4.2496-4.2516 in
  Out-of-Round Production (Maximum Minus Minimum Bore Diameter) 0.0180 mm (max.) 0.0007 in (max.)
  Out-of-Round Service (Maximum Minus Minimum Bore Diameter) 0.050 mm (max.) 0.002 in (max.)
  Taper Production 0.0180 mm (max.) 0.0007 in (max.)
  Taper Service - Thrust Axis 0.050 mm (max.) 0.002 in (max.)
  Taper Service - Pin Axis 0.050 mm (max.) 0.002 in (max.)
Engine Block (Production Specifications)
  Main Bearing Bore Diameter 74.6060-74.6220 mm 2.9372-2.9379 in
  Lifter Bore Diameter 21.417-21.443 mm 0.843-0.844 in
  Deck Height from Crankshaft Bore 259.875-260.125 mm 10.231-10.241 in
  Head Deck Surface Flatness (entire face) 0.100 mm 0.004 in
  Head Deck Surface Flatness within 150 mm (6 in) 0.050 mm 0.002 in
Piston
  Piston Diameter (Coated Piston) Not Measurable Not Measurable
  Clearance Production Interference Fit (coated piston) Interference Fit (coated piston)
Piston Ring Compression
  Top Groove Clearance 0.031-0.074 mm 0.0012-0.0029 in
  Second Groove Clearance 0.031-0.074 mm 0.0012-0.0029 in
  Top Ring Production Gap 0.300-0.450 mm 0.012-0.018 in
  Top Ring Service Limit Gap 0.450-0.675 mm 0.018-0.027 in
  Second Ring Production Gap 0.450-0.650 mm 0.017-0.025 in
  Second Ring Service Limit Gap 0.675-0.975 mm 0.026-0.039 in
Piston Ring Oil Control
  Ring Groove Clearance 0.051-0.203 mm 0.002-0.008 in
  Production Gap 0.249-0.759 mm 0.0098-0.0299 in
  Service Limit Gap 0.373-1.138 mm 0.015-0.045 in
Piston Pin
  Diameter 26.416-26.419 mm 1.0400-1.0401 in
  Fit in Connecting Rod 0.049-0.020 mm Interference 0.00019-0.0007 in Interference
Crankshaft
  Crankshaft Main Journal Runout - Production 0.0380 mm (max.) 0.0015 in (max.)
  Crankshaft Main Journal Runout - Service 0.0510 mm (max.) 0.0020 in (max.)
  Crankshaft Journal Diameter #1, #2, #3, #4, #5 69.805-69.822 mm 2.7482-2.7489 in
  Crankshaft Journal Taper Production 0.0102 mm (max.) 0.0004 in
  Crankshaft Journal Out-of-Round Production 0.0102 mm (max.) 0.0004 in
  Crankshaft Bearing Clearance #1, #2, #3, #4 Production 0.022-0.052 mm 0.0008-0.0020 in
  Crankshaft Bearing Clearance #5 Production 0.035-0.067 mm 0.0014-0.0026 in
  Crankshaft Bearing Clearance #1, #2, #3, #4 Service Limit 0.022-0.089 mm 0.0008-0.0035 in
  Crankshaft Bearing Clearance #5 Service Limit 0.035-0.102 mm 0.0014-0.0040 in
  Crankshaft End Play 0.127-0.279 mm 0.0050-0.0110 in
  Crankpin Diameter 55.854-55.870 mm 2.1990-2.1996 in
  Crankpin Taper Production 0.0102 mm (max.) 0.0004 in
  Crankpin Out-of-Round Production 0.0102 mm (max.) 0.0004 in
  Rod Bearing Clearance Production 0.021-0.064 mm 0.0008-0.0025 in
  Rod Bearing Clearance Service Limit 0.021-0.081 mm 0.0008-0.0032 in
  Connecting Rod Side Clearance 0.384-0.686 mm 0.0151-0.0270 in
Camshaft
  Camshaft Runout - Production 0.051 mm (Maximum) 0.002 in (Maximum)
  Camshaft Runout - Service 0.076 mm 0.003 in
  Lobe Lift Intake 6.924-7.026 mm 0.2726-0.2766 in
  Lobe Lift Exhaust 6.973-7.075 mm 0.2745-0.2785 in
  Journal Diameter 49.4720-49.5220 mm 1.9477-1.9497 in
  Camshaft Bearing Inside Diameter 49.5480-49.5730 mm 1.9507-1.9517 in
Valve System
  Lifter Hydraulic, Roller Followers
  Rocker Arm Ratio 1.70:1
  Valve Lash Intake Net Lash
  Valve Lash Exhaust Net Lash
  Face Angle (Intake/Exhaust) 45 degrees
  Seat Angle (Intake/Exhaust) 46 degrees
  Seat Runout (Intake/Exhaust) 0.0500 mm (Maximum) 0.002 in (Maximum)
  Seat Width Intake 0.800-1.200 mm 0.030-0.060 in
  Seat Width Exhaust 1.651-2.159 mm 0.060-0.095 in
  Stem Clearance Production Intake 0.025-0.074 mm 0.0010-0.0029 in
  Stem Clearance Production Exhaust 0.030-0.079 mm 0.0012-0.0031 in
  Stem Clearance Service Intake 0.025-0.088 mm 0.0010-0.0034 in
  Stem Clearance Service Exhaust 0.030-0.091 mm 0.0012-0.0036 in
  Valve Spring Pressure Closed 381-419 N @ 45.923 mm 86-94 lb @ 1.808 in
  Valve Spring Pressure Open 962-1058 N @ 33.985 mm 216-236 lb @ 1.338 in
  Valve Spring Installed Height 45.923-46.685 mm 1.808-1.838 in
  Valve Spring Free Length 56.35 mm 2.218 in
  Valve Head Diameter - Intake 55.63 mm 2.19 in
  Valve Head Diameter - Exhaust 43.69 mm 1.72 in
  Valve Stem Diameter - Intake 9.436-9.454 mm 0.3715-0.3722 in
  Valve Stem Diameter - Exhaust 9.431-9.449 mm 0.3713-0.3720 in
  Maximum Valve Spring Installed Height Shim (Service Only) 0.726 mm 0.030 in
  Maximum Valve Spring Tension Shim (Service Only) 0.726 mm 0.030 in
  Maximum Combined Valve Spring Installed Height and Valve Spring Tension Shim (Service Only - Shim Placed Under Valve Rotator Only) 1.524 mm 0.060 in
RENDER: 1.0x

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