Camshaft - Thumper NSR Stage 1 - Hydraulic Roller - Lift 0.541 / 0.530 in - Duration 272 / 291 - 111 LSA - 1800 / 6500 RPM - GM LS-Series - Each Brand-COMP CAMS MPN 54-700-11 . **NOTE: Gen III Engines Truck Freight NO
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