Comp Cams Camshaft / Lifters / Springs / Timing Set - Xtreme Energy - Hydraulic Flat Tappet - Lift 0.515 / 0.520 in - Duration 268 / 280 - 110 LSA - 1600 / 5800 RPM - Big Block Chevy - Kit-K11-242-3--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO