COMP Cams Camshaft CS 307Rxd-12

COMP Cams has built a reputation for making serious performance engine parts, and this CS 307Rxd-12 solid roller camshaft is a prime example. It's designed for drag racing and offers a 274/282 degree duration split, making it a strong choice for bracket racing when paired with good cylinder heads and a 1.6 ratio rocker arm setup. This camshaft fits a wide range of Chevrolet Gen 1 Small Block engines, including popular displacements like the 350, 400, and 307, among many others. It's important to note that this camshaft is for flat tappet blocks; it does not fit factory roller blocks from 1985 and newer, nor does it fit LS-based engines. If you have a 1955-1957 model, you'll need to confirm if your block has the specific oiling groove on the rear journal, as this particular camshaft does not accommodate it.

This is a solid roller camshaft, which means it uses roller lifters for reduced friction and increased RPM potential compared to flat tappet designs. The specifications are geared towards maximizing power in a drag racing environment, providing a good powerband for bracket cars. When installing this camshaft, remember it's intended for blocks that originally came with a flat tappet camshaft. If your engine was built from the mid-80s onward, it's crucial to verify its original configuration by removing the intake manifold or timing cover to confirm whether it's a factory roller block or a flat tappet block. This ensures proper compatibility and avoids potential installation issues.

For those building a dedicated drag car or a powerful street/strip machine based on a Chevrolet Small Block Gen 1, this COMP Cams camshaft offers a well-built option. It's designed to work with specific cylinder heads and rocker arms to achieve its performance potential. Always consult the manufacturer's installation instructions for critical details regarding lifter preload, break-in procedures, and any other specific requirements for this solid roller camshaft to ensure optimal performance and longevity.