SBC Roller Rocker Arms 1.65 Ratio 7/16 Stud

The SBC Roller Rocker Arms 1.65 Ratio 7/16 Stud from Scorpion Performance are designed for small-block Chevrolet engine builders looking to enhance valve actuation and performance. These roller rocker arms cater to both enthusiasts and mechanics who prioritize precision in their valvetrain geometry, whether for street engines, performance cruisers, or track-focused builds.

Featuring a 1.65 ratio, these rocker arms increase valve lift beyond the camshaft's rise, improving airflow velocity and scavenging across the RPM range. The design replaces sliding friction with precision needle bearings, significantly reducing parasitic drag compared to traditional stamped steel options. The 7/16-inch stud diameter ensures robust clamping force and concentricity, essential for maintaining consistent valve timing under high-lift cam profiles.

These rocker arms are particularly beneficial for builders upgrading from older 1.5-ratio iron rockers or factory stamped pieces, allowing for modern cam grind potential without extensive port work. Their design minimizes deflection and harmonics, ensuring reliable valvetrain response at both idle and peak horsepower.