COMP Cams Camshaft CB XR297 R-10

This is the COMP Cams Xtreme Energy XR297 R-10 solid roller camshaft, designed for Chevrolet Big Block engines like the 396, 402, 427, and 454 cubic inch displacements. It's built for enthusiasts looking to significantly improve their engine's performance, particularly in applications originally equipped with flat tappet camshafts. This camshaft is a substantial upgrade for those seeking more power and a more aggressive engine profile.

The XR297 R-10 features a 260/266 degree duration at .050 inch lift and .558/.558 inch lift, making it a potent choice for street and strip applications. It's important to note that this solid roller camshaft is optimized for use with a Melanized or Nitrided distributor gear. Using cast iron or steel gears without these surface treatments can lead to premature wear and will void the warranty, so selecting the correct distributor gear is crucial for longevity and performance. This camshaft is a well-built component that offers a notable change in your engine's powerband.

When installing this camshaft, remember that it's designed for engines originally equipped with flat tappet camshafts. If your specific 1965-66 396 Big Block has an oiling groove in the rear journal, this particular part number will not fit. For those specific applications, COMP Cams offers alternative camshafts. Ensure you have the correct distributor gear and follow all manufacturer installation guidelines for optimal results and to maintain your warranty.