Comp Cams Camshaft - Xtreme 4 x 4 - Hydraulic Flat Tappet - Lift 0.544 / 0.564 in - Duration 270 / 278 - 111 LSA - 1600 / 5800 RPM - Big Block Chevy - Each-11-239-3--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO