Edelbrock part #3712 Performer-Plus camshaft is designed for small-block Oldsmobile 350-403 V-8 applications. This Edelbrock cam kit produced 330 ft-lbs. of torque when used with #3711 intake and stock iron cylinder heads on a 350 engine. The camshaft will produce optimum torque from the low-end to the mid-range, Performer-Plus camshafts match with Performer manifolds for vehicles operating from off-idle to 5500 rpm. This Performer-Plus is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. All camshafts include flat tappet lifters, assembly lube and instructions. Camshaft Specifications: - Duration @ .050 Intake: 204 degrees - Duration @ .050 Exhaust: 214 degrees - Lift @ Valve Intake: .449" - Lift @ Valve Exhaust: .473" - Lobe Separation: 114 Degrees - Intake Centerline: 106 Degrees - Idle Vacuum @ 1000 RPM's: 16"