Comp Cams Camshaft - Xtreme 4 x 4 - Hydraulic Flat Tappet - Lift 0.480 / 0.498 in - Duration 270 / 278 - 111 LSA - 1800 / 6000 RPM - Small Block Chevy - Each-12-243-3--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO