COMP Cams Camshaft Kit CS XR276HR-10

When you're looking to get more out of your Chevrolet Small Block Gen 1 engine, this COMP Cams Xtreme Energy Camshaft Kit is a solid choice. What you get in this kit is a camshaft, a set of lifters, a timing chain set, assembly lube, decals, and instructions. This kit is designed for high-performance street machines that are looking for a noticeable change in their engine's character, often paired with a 2000+ RPM stall converter and gear changes to really make it sing.

The XR276HR-10 camshaft itself is a hydraulic roller type, featuring a 224-degree intake duration and a 230-degree exhaust duration. This specific grind is known for producing a choppy idle, which many enthusiasts associate with a serious performance build. It's built for engines that can handle a bit more aggressive profile, and it's important to note that it's intended for blocks that originally used a flat tappet camshaft. If your engine was built from 1985 or newer and came with a factory roller setup, you'll need to confirm by removing the intake or timing cover, as GM phased in roller cams gradually.

This kit fits a wide range of Chevrolet Small Block Gen 1 engines, including popular displacements like the 350, 400, and 327, among others. It's a great option for vehicles like the Chevrolet C10, Camaro, and Corvette, as well as many Buick and Cadillac models from the 80s and 90s that used these engines. Just be aware that this camshaft kit is not CARB approved and cannot be shipped to California. For 1955-1957 Chevrolet 265 engines, a specific oiling groove on the 5th cam journal is required, so check with COMP Cams for more details if that applies to your build.