Chevrolet Silverado / GMC Sierra. Service manual — part 387

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

0.3 mm

0.0118 in

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Surface Flatness- Production Value

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

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

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

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

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

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado