Comp Cams Camshaft - Big Mutha' Thumpr - Hydraulic Roller - Lift 0.570 / 0.554 in - Duration 299 / 319 - 107 LSA - 2300 / 6100 RPM - Big Block Chevy - Each-11-602-8--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO