COMP Cams Cam & Lifter Kit CS XR270HR-1

If you're looking to wake up your Chevrolet Small Block Gen 1 engine, this COMP Cams Xtreme Energy hydraulic roller camshaft and lifter kit is a solid option. This kit is designed for high-performance applications and is one of the largest cams that can work with a stock torque converter, giving you a noticeable idle that signals more power is on tap. It's a popular choice for builders aiming for improved performance without needing to swap out their entire drivetrain.

Inside this kit, you'll find the XR270HR-1 camshaft, a set of hydraulic roller lifters, assembly lube to ensure proper break-in, and decals. The camshaft itself features a 218-degree intake and 224-degree exhaust duration at .050 inch lift, with .495 inch intake and .502 inch exhaust lift. These specifications are chosen to provide a strong powerband, especially in the mid-range, and are well-suited for engines like the 350, 327, and 400 cubic inch variants. Remember, this kit is intended for engines with a flat tappet camshaft setup; if your engine was built from 1985 onward, it's crucial to verify if it has a factory roller camshaft before installation, as this kit will not work with those systems.

This kit fits a wide range of Chevrolet Gen 1 Small Block engines, covering displacements from 262 all the way up to 400 cubic inches. It's important to note that this kit is not CARB approved and cannot be shipped to California. For engines from 1955-1957, a specific oiling groove on the 5th cam journal may be required, so check with COMP Cams for details if you have one of these early engines.