Comp Cams Camshaft - Xtreme Energy - Mechanical Flat Tappet - Lift 0.501 / 0.510 in - Duration 274 / 280 - 110 LSA - 2000 / 6400 RPM - Small Block Chevy - Each-12-677-4--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO