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HOMESERVICE MANUALSGMC2010SAVANA G2500, VAN CARGO EXTENDED, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1084 (ENGINE MECHANICAL - 6.6L (1 OF 5))SPECIFICATIONSENGINE MECHANICAL SPECIFICATIONS
2010 GMC Savana G2500, Van Cargo Extended, 6.6 6

Engine Mechanical Specifications

2010 GMC Savana G2500, Van Cargo Extended, 6.6 6SECTION Engine Mechanical Specifications
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet 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
 LLY/LBZ/LMM
  • Bore
 103 mm 4.0551 in
  • Stroke
 99 mm 3.8976 in
  • Compression Ratio
 16.8:1
  • 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 - Exhuast - 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
 0.14 mm 0.0055 in
  • Crankshaft Main Bearing Clearance - Production Value
 0.039-0.070 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-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
Valve System
  • Valves-Valve Face Angle - Production Value
 45 degrees
  • 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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  • • You smell fuel, burning insulation, or see smoke.
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  • • 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.