COMP Cams Camshaft CS XM 270HR-12

If you're looking to get more out of your Gen 1 Small Block Chevrolet engine, especially in a marine application, this COMP Cams Xtreme Marine hydraulic roller camshaft is a solid option. It's designed for factory roller camshaft equipped 305 and 350 cubic inch engines from 1987 and newer, covering a wide range of vehicles like the Chevrolet C1500, Camaro, and Corvette, as well as Buick Roadmaster and Cadillac Fleetwood models. This camshaft features a 218 degrees of intake duration and 224 degrees of exhaust duration at .050 inch lift, with a .495 inch intake and .501 inch exhaust lift, all on a 112-degree lobe separation angle. These specifications are chosen to provide an improved power band that extends higher into the RPM range compared to stock, making it well-suited for the demands of marine use where consistent power delivery is key.

This camshaft utilizes a hydraulic roller design, which is more efficient than flat tappet designs. This means less friction, allowing for more aggressive cam profiles that can increase horsepower and torque without sacrificing reliability. The Xtreme Marine series is specifically tuned for the unique requirements of boats, focusing on a broad powerband and good low-end torque to get you moving. It's built with durable materials to withstand the rigors of marine environments. When installing this camshaft, remember that it's designed for OE roller SBC engines, so ensure your engine is equipped with the factory roller lifters and pushrods. You'll also want to consider other valvetrain components like valve springs, retainers, and seals to match the camshaft's specifications for optimal performance and longevity.

This camshaft is not CARB approved and cannot be shipped to California. It's important to ensure compatibility with your specific vehicle's engine and intended use before purchasing. For a complete installation, it's recommended to consult the manufacturer's detailed instructions and consider replacing other wear items in the valvetrain.