SBC Sport Comp Shaft R/A Kit 1.50/1.50 Ratio

The T AND D MACHINE SBC Sport Comp Shaft R/A Kit 1.50/1.50 Ratio is a complete rocker arm assembly engineered for small-block Chevy performance builds. This shaft-mount design delivers the mechanical advantage needed for competitive street and strip applications, with a 1.50 rocker arm ratio that provides direct valve control and consistent lift across the RPM range. The full roller design minimizes friction and wear while maximizing valvetrain efficiency.

Built from aluminum construction with a natural finish, this rocker arm kit is designed as a complete assembly ready for installation on small-block Chevy platforms. The 1.50-to-1.50 ratio configuration maintains linear valve actuation, making it an ideal choice for applications requiring predictable, proportional valve timing without the complexity of variable rocker ratios. The shaft-mount design ensures rigid support and precise geometrical stability under high-lift, high-RPM conditions typical of race-prepared engines.

This kit is purpose-built for engine builders and enthusiasts developing small-block Chevy powerplants for drag racing, road course competition, or high-output street engines where valvetrain reliability and repeatable performance matter. Whether upgrading from stock stamped-steel rocker arms or building a complete cylinder head package, this SportComp assembly provides the mechanical foundation for maximum valve timing accuracy and durability at elevated boost levels and engine speeds. Proper installation and timing verification are essential to achieve rated performance.