COMP Cams Camshaft CB8 XR258 HR12

If you're looking to improve the low-end torque and overall pulling power of your GM 8.1L engine, especially for towing or RV applications, this COMP Cams Xtreme Energy XR258 camshaft is a solid choice. It's designed to work with your stock intake and exhaust manifolds, making the installation process more straightforward. This camshaft is a popular upgrade for owners who want more grunt from their big-block Chevy without needing to change out their entire induction system.

The XR258 HR12 is a hydraulic roller camshaft, which means it uses roller lifters to reduce friction compared to flat tappet designs. This translates to better efficiency and potentially longer engine life. The camshaft's specifications, with an intake duration of 206 degrees and an exhaust duration of 212 degrees at 0.050 inch lift, are optimized to deliver a strong torque curve right off idle and through the mid-range. This improved torque is exactly what you need when hauling heavy loads or climbing grades.

This camshaft fits a range of GM trucks and SUVs, including models like the Chevrolet Silverado 2500 HD, Suburban 2500, and Avalanche 2500 from the early 2000s. While it offers a significant improvement in towing and RV performance, please note that it is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper setup and break-in procedures to ensure you get the most out of this camshaft.