Comp Cams Camshaft - Xtreme Energy - Hydraulic Flat Tappet - Lift 0.520 / 0.523 in - Duration 274 / 286 - 110 LSA - 1800 / 6000 RPM - Small Block Ford - Each-31-246-3--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO