COMP Cams Camshaft CS 300B-R6

This COMP Cams CS 300B-R6 solid roller camshaft is built for drag racing applications on Chevrolet Small Block engines. It features a 264-degree intake and 270-degree exhaust duration at .050 lift, designed to maximize power in the upper RPM range for competitive events. This camshaft is specifically 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.

The CS 300B-R6 is a popular choice for builders looking to extract maximum performance from their GEN 1 Small Block Chevy. It fits a wide range of displacements, from the 262ci up to the 400ci, and is compatible with many Chevrolet, Buick, and GMC vehicles from the 1980s and early 1990s. However, it's crucial to verify your specific engine's configuration. This camshaft is not compatible with factory roller camshaft blocks (typically 1985 and newer) or LT1/LT4 engines, nor any LS-based engines. Early 1955-1957 SBC engines require a specific oiling groove on the rear journal, which this particular part number does not accommodate; please contact us if your application requires that feature.

For optimal performance and longevity, ensure you are using the correct distributor gear as specified. This camshaft is intended for competition use and is not CARB approved, meaning it cannot be legally shipped to California. Always consult your engine builder or a qualified mechanic to confirm compatibility with your specific build and ensure proper installation procedures are followed.