Comp Cams Camshaft / Lifters - High Energy - Hydraulic Flat Tappet - Lift 0.454 / 0.454 in - Duration 268 / 268 - 110 LSA - 1500 / 5500 RPM - Small Block Chevy - Kit-CL12-210-2--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO