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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1441 (ENGINE MECHANICAL - 4.2L)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 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. 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 In-Line-6
  Displacement 4.2L 256 cu in
  RPO LL8
  VIN "S"
  Bore 93 mm 3.66 in
  Stroke 102 mm 4.02 in
  Compression Ratio 10:1
  Engine Compression Test 1482 KPa 215 psi
  Firing Order 1-5-3-6-2-4
  Spark Plug Gap 1.14-1.25 mm 0.044-0.050 in
Block
  Crankshaft Main Bearing Bore Diameter 78.070-78.088 mm 3.0760-3.0766 in
  Cylinder Bore Diameter 92.990-93.006 mm 3.6638-3.6644 in
  Cylinder Bore Out-of-Round 0.013 mm 0.0005 in
  Cylinder Head Deck Surface Flatness 0.08 mm 0.003 in
  Cylinder Liner Recession 0.015 mm 0.0006 in
Camshaft
  Camshaft End Play - Exhaust 0.045-0.215 mm 0.0017-0.0084 in
  Camshaft End Play - Intake 0.051-0.201 mm 0.0020-0.0079 in
  Camshaft Journal Diameter - All Intake and Exhaust #2-#7 26.936-26.960 mm 1.0612-1.0622 in
  Camshaft Journal Diameter - Exhaust #1 29.936-29.960 mm 1.1794-1.1804 in
  Camshaft Journal to Bore Clearance 0.040-0.085 mm 0.0015-0.0033 in
Connecting Rod
  Connecting Rod Bearing Clearance 0.021-0.065 mm 0.0008-0.0025 in
  Connecting Rod Bore Diameter - Bearing End 60.322-60.338 mm 2.3749-2.3755 in
  Connecting Rod Bore Out-of-Round - Bearing End 0.005 mm 0.0002 in
  Connecting Rod Side Clearance 0.05-0.35 mm 0.0019-0.0137 in
Crankshaft
  Crankshaft End Play 0.112-0.388 mm 0.0044-0.0153 in
  Crankshaft Main Bearing Clearance 0.012-0.064 mm 0.0004-0.0025 in
  Crankshaft Main Journal Diameter 69.968-69.984 mm 2.7567-2.7574 in
  Crankshaft Main Journal Out-of-Round 0.005 mm 0.0002 in
  Crankshaft Main Journal Taper 0.005 mm 0.0002 in
Cylinder Head
  Surface Flatness - Block Deck 0.08 mm 0.003 in
  Surface Flatness - Exhaust Manifold Deck 0.08 mm 0.003 in
  Surface Flatness - Intake Manifold Deck 0.08 mm 0.003 in
Exhaust Manifold
  Surface Flatness 0.08 mm 0.003 in
Lubrication System
  Oil Pressure - Minimum 85 KPa 12 psi 1200 RPM
Oil Pump
  Gear Diameter - Drive 73.415-73.370 mm 2.893-2.891 in
  Gear Diameter - Driven 87-86.975 mm 3.428-3.426 in
  Gear Pocket - Depth 15.609-15.584 mm 0.615-0.614 in
  Gear Pocket - Diameter 87.065-87.040 mm 3.430-3.429 in
  Gear Thickness - Drive 15.546-15.521 mm 0.613-0.611 in
  Gear Thickness - Driven 15.360-15.511 mm 0.605-0.611 in
  Lobe Inner Diameter - Maximum 11.9 mm 0.469 in
  Relief Valve-to-Bore Clearance 14.6-14.575 mm 0.575-0.574 in
Piston Rings
  Piston Ring End Gap - First Compression Ring 0.15-0.3 mm 0.0059-0.0118 in
  Piston Ring End Gap - Second Compression Ring 0.36-0.51 mm 0.0142-0.0201 in
  Piston Ring End Gap - Oil Control Ring 0.250-0.760 mm 0.0098-0.0299 in
  Piston Ring to Groove Clearance - First Compression Ring 0.043-0.093 mm 0.0017-0.0037 in
  Piston Ring to Groove Clearance - Second Compression Ring 0.043-0.093 mm 0.0017-0.0037 in
  Piston Ring to Groove Clearance - Oil Control Ring 0.059-0.215 mm 0.0023-0.0085 in
Pistons and Pins
  Piston - Piston Diameter 92.971-93.005 mm 3.6603-3.6616 in
  Piston - Piston Pin Bore Diameter 23.002-23.008 mm 0.9056-0.9058 in
  Piston - Piston to Bore Clearance -0.015-0.035 mm -0.0006-0.0014 in
  Pin - Piston Pin Clearance to Connecting Rod Bore 0.001-0.018 mm 0.0004-0.0007 in
  Pin - Piston Pin Clearance to Piston Pin Bore 0.003-0.012 mm 0.00012-0.0005 in
  Pin - Piston Pin Diameter 22.996-22.999 mm 0.9054-0.9055 in
Valve System
  Valves - Valve Face Runout 0.038 mm 0.0015 in
  Valves - Valve Seat Runout 0.05 mm 0.002 in
  Valves - Valve Stem-to-Guide Clearance - Exhaust 0.0375-0.0775 mm 0.0015-0.0030 in
  Valves - Valve Stem-to-Guide Clearance - Intake 0.030-0.065 mm 0.0011-0.0025 in
  Valve Springs - Valve Spring Load - Closed 211.4-233.4 N 35 mm 47.5-52.5 lb 1.701 in
  Valve Springs - Valve Spring Load - Open 579-631 N 24.5 mm 130-142 lb 1.260 in
RENDER: 1.0x

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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.