COMP Cams Camshaft Kit CB XR308H-R12

If you're building a performance Chevrolet Big Block engine, especially for demanding applications like jet boats or bracket racing, this COMP Cams Camshaft Kit is a solid option. This kit is designed for Chevrolet GEN IV 396-454 Big Block engines that originally came with flat tappet camshafts, and it's particularly well-suited for setups with 10:1 or higher compression ratios. It's a comprehensive package that aims to simplify your build by including all the essential components you'll need to get your new camshaft installed and running.

What sets this kit apart is that it's not just the camshaft; it's a complete small kit designed to work together. Inside, you'll find the XR308H-R12 hydraulic roller camshaft itself, which features a 254/260 degree duration at .050 inch lift. This profile is known for making good power in applications like jet boats with B impellers, and it's also a popular choice for river drags or bracket racing where consistent performance is key. The kit also includes the necessary lifters, a timing chain set for precise valve timing, assembly lube to protect your new parts during initial startup, and even decals and instructions to guide you through the process. This thoughtful inclusion of components helps ensure a smoother installation and a well-matched valvetrain.

This kit is a significant upgrade for engines looking for improved performance and reliability in high-stress situations. While it's designed for a wide range of Chevrolet Big Block applications, including models like the Chevelle, Camaro, and Impala from the late 60s through the mid-70s, it's important to note that it is not CARB approved and cannot be shipped to California. Always refer to the included instructions for proper installation and break-in procedures to get the most out of this performance camshaft kit.