COMP Cams Camshaft CS 47S XS290S-10

COMP Cams has a solid reputation for making performance engine parts, and this XS290S-10 Xtreme Energy 4/7 Swap camshaft is a great example. It's built for Chevrolet Small Block Gen 1 engines, including popular displacements like the 350, 305, and 400 cubic inch V8s. This camshaft is designed for pro street and bracket racing applications, meaning it works best when paired with a good intake manifold, headers, and appropriate gearing, plus a 3300+ stall torque converter if you're running an automatic transmission.

The '4/7 Swap' design is a notable feature that helps improve exhaust scavenging and can lead to better cylinder filling, especially at higher RPMs. With a 252-degree intake duration and 260-degree exhaust duration at .050 lift, this solid flat tappet camshaft offers a good balance for performance builds that still see regular street use. It's important to confirm your engine uses a flat tappet setup, as many later model Small Blocks (from 1985 and newer) came with factory roller camshafts, which are not compatible with this part. Also, be aware that early 1955-1957 Chevrolet 265 engines require a specific oiling groove on the rear journal that this camshaft does not have.

This camshaft is a solid option for enthusiasts looking to get more out of their classic Chevrolet V8. Remember to check your engine's specific configuration to ensure compatibility before ordering.