COMP Cams Camshaft CS XR270HR-10

If you're looking to get more out of your Chevrolet Small Block engine, especially for street applications where you need strong torque and good response, this COMP Cams Xtreme Energy camshaft is a solid choice. It's designed to bridge the gap between milder street cams and aggressive race-only grinds, offering a noticeable bump in performance without sacrificing too much in terms of drivability. This camshaft is a popular option for builders aiming for excellent all-around performance in carbureted setups.

This particular camshaft, the XR270HR-10, features a hydraulic roller design, which means it operates more smoothly and efficiently than older flat-tappet designs. With a duration of 218 degrees intake and 224 degrees exhaust at 0.050 lift, and a lobe separation of 110 degrees, it's tuned to deliver a strong torque curve that peaks around 3800 RPM, while still maintaining decent vacuum for accessories and a manageable idle. COMP Cams uses quicker opening lobe profiles to improve responsiveness and increase the area under the lift curve, translating to better throttle response and more power across the RPM range. For best results, it's recommended to pair this camshaft with COMP Cams roller rockers and matched valve springs, as well as other performance parts like an upgraded intake manifold and headers.

This camshaft fits a wide range of Chevrolet Gen 1 Small Block engines, including popular displacements like the 350, 327, and 400 cubic inch V8s, found in vehicles such as the Chevrolet C10, Camaro, and Caprice. It's important to verify your engine's configuration, as it does not fit factory roller blocks from 1985 and newer, nor does it fit the LS-based engines. For optimal performance and longevity, ensure you have the necessary supporting modifications and consider consulting the manufacturer's installation guidelines.