COMP Cams Camshaft CS 278Xo-6

This COMP Cams Oval Track camshaft, part number 12-652-5, is built with a solid flat tappet design and features 248 degrees of intake duration and 250 degrees of exhaust duration. It’s intended for Chevrolet Small Block engines displacing 327 to 358 cubic inches, requiring at least 11:1 compression and a 2-barrel carburetor with good intake and exhaust flow. This camshaft is a popular choice for builders looking to extract more performance from their Gen 1 Small Block Chevy, fitting a wide range of vehicles like the Chevrolet Camaro, Corvette, and Caprice, as well as many trucks and commercial chassis models from the 1980s and 1990s.

The CS 278Xo-6 is well-built for demanding applications where consistent performance is key. Its specific lobe separation and duration figures are chosen to provide a strong powerband in the upper RPM range, making it suitable for oval track racing or performance street builds. When installing this camshaft, it's important to verify your engine's configuration, as some earlier 1955-1957 models and later factory roller blocks (generally 1985 and newer) require different designs. Always consult your engine's specific build details or inspect the block to confirm compatibility with a flat tappet design.