The Edelbrock #7112 Performer RPM Camshaft is designed for street high-performance applications, Performer RPM cams provide power from 1500 to 6500 rpm. This hydraulic lifter camshaft is dyno-matched to Performer RPM manifolds for high-rpm horsepower while still maintaining acceptable low-end torque. With 10 to 12 inches of manifold vacuum at idle, Performer RPM cams have more lift and duration than most street camshafts. In the manifold section you’ll find horsepower graphs showing the power levels obtainable when the Performer RPM package is used with the right combination of Edelbrock components. Hydraulic flat tappet lifters are included with each Performer RPM camshaft.Installation Notes: • Designed for Small-Block Oldsmobile, 350-403, V8 • 397 HP & 400 ft.-lbs. with #7111 intake & stock iron heads. Adjustable pushrods or rocker arms required.