Comp Cams Camshaft - Xtreme Energy - Mechanical Roller - Lift 0.639 / 0.646 in - Duration 274 / 280 - 110 LSA - 2200 / 6200 RPM - Big Block Chevy - Each-11-770-8--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO