Edelbrock Perf Plus Cam Only Chevy 4 3 Before 1992Edelbrock Rollin' Thunder Camshaft #3714 is designed for 4. 3L 90 Degree V6 Chevy engines 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 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 torque graphs