Edelbrock Camshaft Performer RPM Hydraulic Roller SB Chevrolet 1955-1986 Wide-Center EFIEdelbrock Rollin' Thunder Camshaft #2210 is designed for small block Chevy engines from 1957 86 and produce optimum torque from the low end to the mid range. Rollin' Thunder camshafts should be matched with Performer manifolds for vehicles operating from off idle to 5500 rpm. They are smooth idling cams for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. In the manifold section you'll find