SBC Roller Rocker Arm 1.5 Ratio 3/8 Stud

The SBC Roller Rocker Arm 1.5 Ratio 3/8 Stud from Scorpion Performance is an essential upgrade for small-block Chevrolet engine builders and performance enthusiasts seeking reliable, high-rpm valvetrain control. These roller rocker arms replace traditional stamped steel rockers with precision-engineered components that reduce friction, lower parasitic losses, and deliver measurable horsepower gains throughout the rpm band.

This 1.5:1 ratio design is engineered to provide optimal mechanical advantage for naturally aspirated and moderately boosted small-block applications. Scorpion Performance roller rocker arms feature precision roller bearings that pivot on hardened steel shafts, dramatically reducing friction compared to conventional rocker designs and enabling higher sustained rpm operation without excessive wear.

These rocker arms are ideal for street machines, race engines, and restorations where valvetrain durability and efficiency matter. The 3/8-inch stud mount design ensures secure fastening to conventional small-block Chevrolet cylinder heads, delivering consistent, repeatable geometry across the entire valvetrain for stable idle quality and reliable operation under boost or aggressive rpm scenarios.