COMP Cams Camshaft CS XS274S-10

This is the COMP Cams Xtreme Energy CS XS274S-10 camshaft, designed for Chevrolet Small Block Gen 1 engines. It features a quicker valve opening profile that increases responsiveness and provides more area under the lift curve compared to older camshaft designs. This camshaft is built to boost performance in the mid-range and improve throttle response, while still maintaining adequate vacuum for accessories like power brakes. It’s a solid option for carbureted applications, especially when paired with aftermarket intake manifolds, lower gear ratios, headers, and a free-flowing exhaust system.

The Xtreme Energy grind family is known for delivering noticeable gains in torque and horsepower without sacrificing driveability. This particular camshaft, with its 236/242 duration at .050 lift, is engineered to produce strong mid-range torque and offers a 2200+ stall speed recommendation. It fits a wide range of Chevrolet Gen 1 Small Block engines, including popular displacements like the 350, 327, and 400, as well as many trucks and SUVs that used flat tappet cams into the mid-90s. It's important to confirm your specific engine uses a flat tappet setup, as it does not fit factory roller camshaft engines from 1985 and newer, nor the LS-based engines.