Comp Cams Camshaft - Xtreme Energy - Hydraulic Roller - Lift 0.487 / 0.495 in - Duration 264 / 270 - 110 LSA - 1200 / 5200 RPM - Small Block Chevy - Each-12-412-8--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO