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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 - 0.093 mm 0.0037 in Valves - Valve Stem-to-Guide Clearance - 0.025-0.066 mm 0.001-0.0026 in Valves - Valve Stem-to-Guide Clearance - 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
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