COMP Cams Cam & Lifter Kit CS XM 290H-1

This COMP Cams Cam & Lifter Kit CS XM 290H-1 gives you everything you need to swap out your camshaft and lifters for improved performance. Inside this kit, you'll find the camshaft itself, a set of lifters, assembly lube to get everything properly coated for initial startup, and decals for your engine bay. It's designed for Chevrolet Small Block Gen 1 engines, covering a wide range of displacements from 262 up to 400 cubic inches, and is a popular choice for those looking to build a jet boat with an A impeller, or for bracket racing and high-performance street applications where headers are used.

The Xtreme Marine 246/256 hydraulic flat tappet camshaft is built for engines with around 9.5:1 compression. This kit is specifically for engines that use a flat tappet camshaft setup, so it's important to verify your engine doesn't have a factory roller cam, especially if it's a 1985 or newer small block. The camshaft features a 246-degree intake duration and 256-degree exhaust duration at .050 lift, with a .495-inch lift on both intake and exhaust, making it a solid option for adding noticeable power and torque. COMP Cams is well-known for its well-built valvetrain components, and this kit reflects that reputation.

When installing this kit, remember that it's intended for engines that have been modified with headers and have a compression ratio around 9.5:1. If you have a 1955-1957 Chevrolet 265 engine, you'll need to ensure it has the correct oiling groove on the fifth cam journal. Always refer to the manufacturer's instructions included in the kit for detailed installation procedures and break-in recommendations.