SBC 4&7 Swap C/T Solid Cam 47S 290XOS

The SBC 4&7 Swap C/T Solid Cam 47S 290XOS from COMP CAMS is a precision mechanical flat tappet camshaft engineered for small block Chevy oval track racing applications. This solid lifter cam delivers the aggressive valve timing and lift characteristics demanded by competitive oval track engines operating in the 3400–7200 RPM band. Whether you're building a new engine or upgrading an existing platform, this camshaft provides the duration and lift profile necessary to maximize airflow and horsepower in a purpose-built racing application.

The SBC 4&7 Swap C/T Solid Cam features a 290-degree intake duration and 300-degree exhaust duration with a 106-degree lobe separation angle, producing intake and exhaust lifts of 0.558 inches and 0.549 inches respectively. The asymmetrical profile (290XOS designation) optimizes the intake and exhaust events for the low-to-mid RPM torque characteristics critical in oval track competition. As a mechanical flat tappet design, this camshaft requires compatible lifters and precise valve lash adjustment, offering the reliability and responsiveness preferred in solid lifter racing engines where valve train control and consistent performance are non-negotiable.

This camshaft is ideal for small block Chevy oval track competitors seeking a bolt-in upgrade that combines proven COMP CAMS engineering with specifications tailored to short-track racing dynamics. Installation requires a compatible small block Chevy engine block with provisions for solid lifter conversion and a properly degreed timing set to optimize power delivery. Buyers should verify their current engine architecture supports solid lifter operation and ensure all associated valve train components—lifters, pushrods, rocker arms, and valve springs—are rated for the high-lift, high-duration profile this camshaft delivers.