COMP Cams Camshaft Kit CBVI XR271HR-12

When you're ready for a serious valve train upgrade on your Chevrolet Big Block Gen VI engine, this complete kit from COMP Cams gives you all the essential components. Inside this box, you'll find the camshaft itself, a set of hydraulic roller lifters, valve springs, retainers, valve locks, and valve stem seals. It also includes a timing chain set to ensure proper synchronization, assembly lube for installation, and decals. This kit is designed for engines that have already seen some upgrades, like ported heads, and requires a stall converter of 2200 RPM or higher, along with an engine programmer.

The XR271HR-12 camshaft is part of COMP Cams' XE Computer Controlled line, featuring a 224-degree intake duration and 232-degree exhaust duration with a 112-degree lobe separation angle. This profile is specifically tuned for computer-controlled applications, aiming for improved performance without sacrificing too much drivability. It's a well-built kit intended to make a notable difference in your engine's powerband, especially when paired with other performance modifications. Remember that this kit is not CARB approved and cannot be shipped to California.

This kit fits a range of Chevrolet and GMC trucks and vans from the mid-to-late 90s, including models like the Chevrolet C2500 Suburban, GMC K2500, and Chevrolet Express 3500. Ensure you have the necessary supporting modifications, such as a higher stall speed torque converter and an engine programmer, to take full advantage of this camshaft kit's capabilities.