Edelbrock Rollin' Thunder Camshaft #2268 is designed for 348/409 (W Series) engines from 1958-65 and produce optimum torque from the low-end to the mid-range. Rollin' Thunder camshafts match with Performer manifolds for vehicles operating from off-idle to Product Features:Roller Cam TypeRoller Lifter TypeExhaust 245 deg/Intake 236 deg Duration @ .050 LiftExhaust 0.376in./Intake 0.368in. Valve Lift112 deg Lobe Steps
