COMP Cams Cam & Lifter Kit CS XM 278H-1

COMP Cams is well-known for performance engine parts, and their Xtreme Marine camshaft and lifter kit is built for serious power. This kit, the CS XM 278H-1, is designed for Chevrolet Small Block Gen 1 engines, offering a significant upgrade for performance applications. It’s a popular choice for jet boats needing strong off-shore high-performance power, and it will give your engine a noticeable, rough idle that signals its aggressive nature.

This kit includes the camshaft, lifters, assembly lube, decals, and instructions to get you started. It’s specifically tuned with a 234/244 degree intake/exhaust duration and a 110-degree lobe separation angle, making it a good choice for high-performance builds. Remember, this kit is for flat tappet engines, so you'll need to confirm your block doesn't have a factory roller camshaft, especially if it's a 1985 or newer build. It fits a wide range of Chevrolet Small Block Gen 1 engines, from the 262 up to the 400 cubic inch displacement, but it's important to verify fitment for your specific vehicle, as GM transitioned to roller cams gradually.