COMP Cams Cam & Lifter Kit CS XR264HR-1

If you're looking to wake up the mid-range power on your classic Chevrolet Small Block Gen 1 engine, this COMP Cams Xtreme Energy hydraulic roller cam and lifter kit is a solid option. Designed for mild performance builds, this kit is particularly well-suited for engines running 3.23 to 3.73 rear gears, where you'll notice a significant improvement in acceleration and responsiveness. It's important to confirm your engine is a factory flat tappet setup, as this kit is not compatible with factory roller camshafts found in many 1985 and newer Small Blocks, nor is it for the LS-based engines.

This kit includes the XR264HR-1 camshaft, a set of hydraulic roller lifters, assembly lube, decals, and instructions, providing you with the essential components to get the job done. The Xtreme Energy series is known for its well-balanced performance, offering a noticeable bump in power without making the engine difficult to drive on the street. The 212/218 degree intake/exhaust duration at .050 lift is a popular choice for street-strip applications where a strong mid-range pull is desired.

When installing this kit, remember to verify your engine's original camshaft type. Many earlier Small Blocks (like the 265, 283, 327, 350, and 400) used flat tappet cams, but GM transitioned to roller cams gradually from the mid-80s. Checking your intake manifold or timing cover will confirm if you have a factory roller setup. For 1955-1957 Chevrolet 265 engines, ensure there's an oiling groove on the fifth cam journal.