Chevrolet Silverado / GMC Sierra. Manual — part 1861
ENGINE MECHANICAL SPECIFICATIONS (RPO LH6 VIN M)
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
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
Rocker Arms - Valve Rocker Arm Ratio
1.70:1
Valve Springs - Valve Spring Free Length
52.9 mm
2.08 in
Valve Springs - Valve Spring Installed Height
45.75 mm
1.8 in
Valve Springs - Valve Spring Load - Closed
340 N at 45.75
mm
76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open
980 N at 33.55
mm
220 lb at 1.32 in
Application
Specification
Metric
English
General
Engine Type
V8
Displacement
5.3L
325 CID
RPO
LH6
VIN
M
Bore
96.0-96.018 mm
3.779-3.78 in
Stroke
92.0 mm
3.622 in
Compression Ratio
9.95:1
Firing Order
1-8-7-2-6-5-4-3
Displacement-on-Demand Cylinders
1-4-6-7
Spark Plug Gap
1.02 mm
0.04 in
Block
Camshaft Bearing Bore 1 and 5 Diameter
59.58-59.63 mm
2.345-2.347 in
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Camshaft Bearing Bore 2 and 4 Diameter
59.08-59.13 mm
2.325-2.327 in
Camshaft Bearing Bore 3 Diameter
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
0.006 mm
0.0002 in
Cylinder Bore Diameter
96.0-96.018 mm
3.779-3.78 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
0.11 mm
0.004 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 - Intake - Non
Displacement-on-Demand Cylinders
7.20 mm
0.283 in
Camshaft Lobe Lift - Intake - Displacement-
on-Demand Cylinders
7.33 mm
0.289 in
Camshaft Lobe Lift - Exhaust - Non
Displacement-on-Demand Cylinders
7.20 mm
0.283 in
Camshaft Lobe Lift - Exhaust - Displacement-
on-Demand Cylinders
7.33 mm
0.289 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
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Connecting Rod Bore Out-of-Round - Bearing
End - Production
0.004-0.008 mm 0.00015-0.0003 in
Connecting Rod Bore Out-of-Round - Bearing
End - Service
0.004-0.008 mm 0.00015-0.0003 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
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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
0.13 mm
0.005 in
Surface Flatness - Intake Manifold Deck
0.08 mm
0.0031 in
Valve Guide Installed Height - Measured from
the Spring Seat Surface to the Top of the
Guide
17.32 mm
0.682 in
Intake Manifold
Surface Flatness - Measured at Gasket Sealing
Surfaces and Measured Within a 200 mm (7.87
in) Area that Includes Two Runner Port
Openings
0.3 mm
0.118 in
Lubrication System
Oil Capacity - with Filter
5.68 liters
6.0 quarts
Oil Capacity - without Filter
5.20 liters
5.5 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
Displacement-on-Demand Relief Valve Oil
Pressure - as Measured at Oil Pressure Sensor
Location
379-517 kPa
Maximum
55-75 psig
Maximum
Oil Pan
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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