Comp Cams Camshaft - LST Stage 1 - Mechanical Roller - Lift 0.672 / 0.668 in - Duration 274 / 288 - 111.5 LSA - 2800 / 7500 RPM - GM LS-Series - Each-54-311-11--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO