COMP Cams Camshaft CS XR258HR-10

If you're looking to get more out of your factory roller Small Block Chevy engine, this COMP Cams Xtreme Energy camshaft is a solid choice. It's designed to work with stock or mildly modified 1987 and later Gen 1 Chevrolet 305 and 350 cubic inch engines that came with a factory roller camshaft. This camshaft aims to give you strong torque across a wide RPM range while still maintaining good fuel mileage, making it a versatile option for street-driven vehicles.

The XR258HR-10 features a 206-degree intake and 212-degree exhaust duration at .050 inch lift, with a 108-degree lobe separation angle. This specific grind is known for producing a noticeable increase in low-end and mid-range power, which translates to better acceleration and responsiveness. It's a popular choice for those rebuilding their top end or looking for an improved powerband without going to an extreme setup. Because it's a hydraulic roller camshaft, you'll benefit from reduced friction and wear compared to older flat-tappet designs, contributing to a longer lifespan and consistent performance.

This camshaft fits a wide variety of vehicles from the late 80s and 90s, including models like the Chevrolet Camaro, Corvette, and various C/K series trucks. It's important to note that this camshaft is not CARB approved and cannot be shipped to California. For optimal performance and reliability, ensure you follow the manufacturer's installation instructions, which typically involve using appropriate valve springs and lifters designed for hydraulic roller applications.