Comp Cams Camshaft / Lifters - Xtreme Energy - Hydraulic Flat Tappet - Lift 0.487 / 0.490 in - Duration 274 / 286 - 110 LSA - 1800 / 6000 RPM - Small Block Chevy - Kit-CL12-246-3--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO