Comp Cams Camshaft / Lifters / Springs / Timing Set - Mutha' Thumpr - Hydraulic Flat Tappet - Lift 0.489 / 0.476 in - Duration 287 / 305 - 107 LSA - 2200 / 6100 RPM - Small Block Chevy - Kit-K12-601-4--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO