Edelbrock Camshaft Performer Chevrolet Small Block E-Street EFIEdelbrock Performer Plus Camshaft #2117 is designed for 283 400 Chevy V8 engines from 1957 86 and produce optimum torque from the low end to the mid range. Performer Plus camshafts should be matched with Performer manifolds for vehicles operating from off idle to 5500 rpm. The Performer Plus #2117 is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. In the manifold