Comp Cams Camshaft - Computer Controlled - Hydraulic Flat Tappet - Lift 0.503 / 0.503 in - Duration 260 / 268 - 112 LSA - 1000 / 5200 RPM - Big Block Chevy - Each-11-302-4--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO