Edelbrock SBC LT1 Roller CamEdelbrock Rollin' Thunder Camshaft #2108 is designed for the LT1 engines from 1992 97 and produces 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 torque