COMP Cams Camshaft CB XM 270H-12

This COMP Cams Xtreme Marine camshaft features a 226 intake and 236 exhaust duration at .050 lift, designed for Chevrolet Big Block engines originally equipped with flat tappet camshafts. It's built to give your engine a strong mid-range pull and improved throttle response, making it a solid choice for marine applications or performance street builds where a noticeable idle is desired.

The CB XM 270H-12 is a hydraulic flat tappet camshaft, meaning it uses a simple and reliable valvetrain design. This camshaft is engineered to provide a good balance of power and drivability, focusing on the mid-range RPM band where many boats and performance vehicles spend a lot of time. You can expect a more aggressive idle sound compared to stock, which many enthusiasts appreciate for its performance feel.

This camshaft fits a wide range of Chevrolet Big Block applications, including popular models like the Chevrolet Impala, Chevelle, and Corvette from the late 1960s through the mid-1970s. When installing, remember to use a quality break-in oil and follow the manufacturer's recommended procedure to ensure proper lubrication and seating of the flat tappets during the critical initial run-in period.