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ENGINE MECHANICAL SPECIFICATIONS (RPO LC9 VIN 3) Valve Lift - Exhaust - Active Fuel 12.46 mm 0.491 in Valve Lift - Intake - Non Active Fuel 12.24 mm 0.488 in Valve Lift - Intake - Active Fuel Management 12.46 mm 0.491 in Valves - Valve Seat Angle 46 degrees Valves - Valve Seat Runout 0.05 mm 0.002 in Valves - Valve Seat Width - Exhaust 1.78 mm 0.07 in Valves - Seat Width - Intake 1.02 mm 0.04 in Valves - Valve Stem Diameter - Production 7.955-7.976 mm 0.313-0.314 in Valves - Valve Stem Diameter - Service 7.95 mm 0.313 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 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
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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