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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1498 (ENGINE MECHANICAL (INTRODUCTION) - 5.7L)SPECIFICATIONSENGINE MECHANICAL SPECIFICATIONS (LS6)
2004 Oldsmobile Bravada AWD

Engine Mechanical Specifications (LS6)

2004 Oldsmobile Bravada AWDSECTION Engine Mechanical Specifications (LS6)
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Engine Mechanical Specifications (LS6)

Application Specification
Metric English
General
  • Engine Type
 V 8
  • Displacement
 5.7 L - 5665 cc 346 CID
  • RPO
 LS6
  • VIN
 S
  • Bore
 99.0-99.018 mm 3.897-3.898 in
  • Stroke
 92.0 mm 3.622 in
  • Compression Ratio
 10.5:1
  • Firing Order
 1-8-7-2-6-5-4-3
  • Spark Plug Gap
 1.016 mm 0.04 in
Block
  • Camshaft Bearing Bore 1 and 5 Diameter - First Design
 59.08-59.13 mm 2.325-2.327 in
  • Camshaft Bearing Bore 2 and 4 Diameter - First Design
 58.83-58.88 mm 2.316-2.318 in
  • Camshaft Bearing Bore 3 Diameter - First Design
 58.58-58.63 mm 2.306-2.308 in
  • Camshaft Bearing Bore 1 and 5 Diameter - Second Design
 59.58-59.63 mm 2.345-2.347 in
  • Camshaft Bearing Bore 2 and 4 Diameter - Second Design
 59.08-59.13 mm 2.325-2.327 in
  • Camshaft Bearing Bore 3 Diameter - Second Design
 58.58-58.63 mm 2.306-2.308 in
  • Crankshaft Main Bearing Bore Diameter
 69.871-69.889 mm 2.75-2.751 in
  • Crankshaft Main Bearing Bore Out-of-Round
 0.005 mm 0.0002 in
  • Cylinder Bore Diameter
 99.0-99.018 mm 3.897-3.898 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 - Measured Within a 152.4 mm (6.0 in) Area
 0.08 mm 0.003 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
 8.19 mm 0.322 in
  • Camshaft Lobe Lift - Intake
 8.24 mm 0.324 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
 0.006 mm 0.00023 in
  • Connecting Rod Bore Out-of-Round - Bearing End - Service
 0.006 mm 0.00023 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
 64.992-65.008 mm 2.558-2.559 in
  • Crankshaft Main Journal Diameter - Service
 64.992 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
 0.22 mm 0.008 in
  • Surface Flatness - Intake Manifold Deck
 0.22 mm 0.008 in
Intake Manifold
  • Surface Flatness - Measured at Gasket Sealing Surfaces
 0.5 mm 0.02 in
Lubrication System
  • Oil Capacity - with Filter
 6.151 Liters 6.5 Quarts
  • Oil Capacity - without Filter
 5.678 Liters 6.0 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 Bellhousing 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
 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
 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
 0.04-0.086 mm 0.00157-0.0033 in
  • Piston Ring to Groove Clearance - First Compression Ring - Service
 0.04-0.068 mm 0.00157-0.0033 in
  • Piston Ring to Groove Clearance - Second Compression Ring - Production
 0.05-0.088 mm 0.002-0.0034 in
  • Piston Ring to Groove Clearance - Second Compression Ring - Service
 0.05-0.088 mm 0.002-0.0034 in
  • Piston Ring to Groove Clearance - Oil Control Ring - Production
 -0.008 to +0.0176 mm -0.0003 to +0.0069 in
  • Piston Ring to Groove Clearance - Oil Control Ring - Service
 -0.008 to +0.0176 mm -0.0003 to +0.0069 in
Pistons and Pins
  • Piston - Piston Diameter - Non Coated Skirt - at Size Point
 98.969-98.987 mm 3.8964-3.8997 in
  • Piston - Piston Diameter - Measured Over Skirt Coating
 98.984-99.027 mm 3.897-3.899 in
  • Piston - Piston to Bore Clearance - Non Coated Skirt - Production
 0.013-0.049 mm 0.0005-0.0019 in
  • Piston - Piston to Bore Clearance - Non Coated Skirt - Service
 0.013-0.074 mm 0.0005-0.0029 in
  • Piston - Piston to Bore Clearance - Coated Skirt - Production
 -0.027 to +0.029 mm -0.001 to +0.0011 in
  • Piston - Piston to Bore Clearance - Coating Worn Off - Service Limit
 0.074 mm 0.0029 in
  • Pin - First Design Press Fit Pin Fit in Connecting Rod Bore
 0.02-0.043 mm - Interference 0.00078-0.00169 in - Interference
  • Pin - First Design Press Fit Pin Clearance to Piston Pin Bore - Production
 0.01-0.02 mm 0.0004-0.00078 in
  • Pin - First Design Press Fit Pin Clearance to Piston Pin Bore - Service
 0.01-0.022 mm 0.0004-0.00086 in
  • Pin - First Design Press Fit Pin Diameter
 23.997-24.0 mm 0.9447-0.9448 in
  • Pin - Second Design Full Floating Pin Fit in Connecting Rod Bore - Production
 0.007-0.02 mm 0.00027-0.00078 in
  • Pin - Second Design Full Floating Pin Fit in Connecting Rod Bore - Service
 0.007-0.022 mm 0.00027-0.00086 in
  • Pin - Second Design Full Floating Pin Clearance to Piston Pin Bore - Production
 0.002-0.01 mm 0.00008-0.0004 in
  • Pin - Second Design Full Floating Pin Clearance to Piston Pin Bore - Service
 0.002-0.015 mm 0.00008-0.0006 in
  • Pin - Second Design Full Floating Pin Diameter
 23.952-23.955 mm 0.943-0.943 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
 14.02 mm 0.552 in
  • Valves - Valve Lift - Exhaust
 13.92 mm 0.548 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 - Valve 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
 7.96 mm 0.314 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
  • Valve Rocker Arm - Valve Rocker Arm Ratio
 1.70:1
  • Valve Springs - Valve Spring Free Length
 53.4 mm 2.1 in
  • Valve Springs - Valve Spring Installed Height
 45.75 mm 1.8 in
  • Valve Springs - Valve Spring Load - Closed
 400 N at 45.75 mm 90 lb at 1.8 in
  • Valve Springs - Valve Spring Load- Open
 1310 N at 31.75 mm 294 lb at 1.25 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.