COMP Cams Camshaft Kit CS XM 278H-12

This COMP Cams camshaft kit gives you the essential components to upgrade your Chevrolet Small Block Gen 1 engine. Inside this kit, you'll find the camshaft itself, a set of lifters, a complete timing chain set, assembly lube, and decals to help with installation. It's designed for high-performance applications, particularly in jet boats where off-shore power is crucial, and it will give your engine a noticeable, rough idle that signals its performance intent.

The Xtreme Marine camshaft features a 234/244 degree duration split and .485/.485 lift, making it a strong choice for engines running impellers like the A or B type. This kit is built for Chevrolet Small Block Gen 1 engines, covering a wide range of displacements from 262ci up to 400ci. It's important to note that this kit is specifically for engines with flat tappet camshafts and will not fit factory roller camshaft setups, including those found in many 1985 and newer models, or any LS-based engines.

When installing this kit, remember to verify your engine's camshaft type. If you're unsure, checking the intake or timing cover is the best way to confirm if you have a flat tappet or roller setup. For early 1955-1957 Chevrolet 265 engines, a specific oiling groove on the 5th journal is required, so reach out if you have one of these classic powerplants.