Edelbrock 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 graphs showing the power gains from Performer manifolds and Performer-Plus cams. All camshafts include flat tappet lifters (except for cams designed for use with stock roller lifters), assembly lube and instructions. This camshaft produced 430 HP and 420 Ft Lbs of Torque when paired with RPM Air Gap intake manifold #7109 and RPM LT4 cylinder heads #61939. Reflashing of the ECU is required and can be used with either standard or automatic transmissions. Use with high stall torque converter only. Camshaft specifications: - Intake duration: 218 Degrees - Exhaust duration: 218 Degrees - Intake lift: .525" - Exhaust lift: .525" - Lobe separation: 112 Degree - Intake Center Line: 112 Degree - Vacuum: 15"