Comp Cams Camshaft - Nitrous HP - Hydraulic Roller - Lift 0.520 / 0.540 in - Duration 288 / 315 - 113 LSA - 2400 / 6500 RPM - Small Block Chevy - Each-12-419-8--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO