COMP Cams Camshaft CS 290A-R6

If you're building a late-model Chevrolet Small Block for oval track racing, specifically a 355 cubic inch engine with good heads and intake, this COMP Cams CS 290A-R6OT camshaft is a solid option. It's designed to perform well on 1/4 to 3/8 mile tracks, offering a 260/264 degree duration profile for a solid roller setup. This camshaft is intended for engines that utilize a flat tappet camshaft design, common in many Small Block Chevys from the 1980s and earlier, though it's always best to confirm your specific block's configuration by removing the intake or timing cover.

This camshaft is a solid roller type, which means it requires a compatible solid roller lifter set. A critical point to note is its compatibility with distributor gears. It is optimized for use with a Melanized or Nitrided distributor gear. Using cast iron or steel gears without these surface treatments will void all warranties and return policies, so be sure to select the correct gear to avoid issues. The camshaft itself is well-built, designed for the demands of racing, and features a specific lobe separation angle that contributes to its performance characteristics on the track.

This COMP Cams camshaft fits a wide range of Chevrolet Small Block Gen 1 engines, including popular displacements like the 350, 400, and 283. It's important to be aware that this camshaft does not fit LT1/LT4 engines or factory roller Small Blocks from 1985 and newer. Additionally, 1955-1957 models with an oiling groove in the rear journal require a different camshaft; please contact us if your early engine has this specific feature. Ensure you have the correct distributor gear and lifters for a successful installation and optimal performance on the track.