BBC Roller Camshaft CB 324IR-10

The COMP CAMS BBC Roller Camshaft CB 324IR-10 is a purpose-built drag race camshaft engineered for big block Chevy engines demanding extreme performance at high RPM. This mechanical roller camshaft delivers aggressive valve lift and duration specifications optimized for dedicated competition use, where peak power delivery in the upper RPM band is the primary objective.

The camshaft profile features 0.775-inch intake lift and 0.748-inch exhaust lift across a 324/332-degree duration split, paired with a 110-degree lobe separation angle. This asymmetrical duration profile—with longer exhaust duration than intake—supports scavenging efficiency in naturally aspirated applications. The RPM range of 5,000 to 7,800 indicates this grind is calibrated for peak efficiency in the upper half of the RPM spectrum, where drag race engines spend their operating window. The mechanical roller design minimizes friction losses compared to flat-tappet designs, translating to reliable valve actuation under sustained high-load conditions.

This camshaft is purpose-designed for dedicated drag race engines where extended idle quality, street-friendly power curves, and emission compliance are secondary to raw quarter-mile performance. Builders selecting this grind prioritize maximum cylinder filling and aggressive cam timing in the power band over all-RPM driveability. Installation requires verification of valvetrain geometry, lifter clearance, and compatibility with the selected intake and exhaust manifold design.

COMP CAMS is recognized in the racing community for precision camshaft manufacturing and grind development tied directly to dyno testing and on-track validation. This BBC roller camshaft carries the engineering standard expected from a manufacturer focused on competition applications rather than street or mild-performance use.