Comp Cams Camshaft - Xtreme Energy - Hydraulic Flat Tappet - Lift 0.487 / 0.493 in - Duration 256 / 268 - 110 LSA - 1000 / 5200 RPM - Big Block Ford - Each-34-234-4--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO