Comp Cams Camshaft - Xtreme Energy - Mechanical Roller - Lift 0.646 / 0.653 in - Duration 280 / 286 - 110 LSA - 2500 / 6500 RPM - Big Block Chevy - Each-11-771-8--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO