Comp Cams Camshaft - Xtreme Energy - Mechanical Flat Tappet - Lift 0.553 / 0.568 in - Duration 268 / 274 - 110 LSA - 1600 / 6000 RPM - Big Block Chevy - Each-11-676-4--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO