COMP Cams Cam & Lifter Kit CS XR276HR-1

This is the COMP Cams Xtreme Energy CS XR276HR-1 hydraulic roller camshaft and lifter kit, designed for Chevrolet Gen 1 Small Block engines. If you're building a high-performance street machine and want a noticeable idle chop with improved powerband, this kit is a solid choice. It's engineered to work well with a 2000+ RPM stall torque converter and appropriate gearing, making it a popular upgrade for enthusiasts looking to get more out of their classic Chevy V8.

This kit includes the camshaft, a set of hydraulic roller lifters, assembly lube, and decals. The camshaft features a 224-degree intake and 230-degree exhaust duration at .050 inch lift, with .527 inch intake and .540 inch exhaust lift. These specifications are designed to provide a strong power curve in the mid-range, perfect for street driving and occasional track use. It's important to confirm your engine is a flat tappet block, as this kit is not compatible with factory roller blocks from 1985 and newer, or LT1/LT4 engines. For 1955-1957 265 engines, ensure the 5th cam journal has an oiling groove.

Installing a camshaft like this is a significant job that typically involves removing the cylinder heads and oil pan. It's a project that many DIYers tackle, but it requires careful attention to detail and proper assembly procedures. COMP Cams is a well-known name in performance engine parts, and this kit represents a popular option for those seeking a noticeable performance increase in their classic Chevrolet V8.