COMP Cams Camshaft CB 324A-R12

This COMP Cams CB 324A-R12 camshaft is a solid roller design, featuring a 284-degree intake duration and 292-degree exhaust duration. It's specifically tuned for drag racing applications on Chevrolet Big Block engines, particularly those in the 396 to 454 cubic inch range that originally came with flat tappet camshafts. The camshaft's design is optimized for use with Melanized or Nitrided distributor gears, which are crucial for proper function and to avoid voiding the warranty. If your Big Block has an oiling groove in the rear journal, common on 1965-66 396 models, this specific camshaft will not fit, and you'll need to contact us for an alternative.

The solid roller valvetrain offers significant advantages in high-RPM performance and durability compared to hydraulic flat tappet designs. This translates to more consistent valve lift and faster response when you're pushing your engine hard on the drag strip. The precise lift and duration figures are engineered to maximize power output in the upper RPM band, making it a popular choice for builders focused on drag racing. Remember, using the correct distributor gear is essential; cast iron or steel gears without a surface treatment like Melanizing or Nitriding can cause premature wear and will void the warranty.

This camshaft is designed to fit a wide range of Chevrolet vehicles equipped with Big Block engines, including models like the Chevrolet Impala, Chevelle, and Camaro from the late 1960s through the mid-1970s, as well as C/K series trucks. Ensure your engine originally used a flat tappet camshaft and that you are using the recommended distributor gear for optimal performance and longevity.