BBC Roller Rocker Arm 1.8 Ratio 7/16 Stud

The Scorpion Performance BBC Roller Rocker Arm 1.8 Ratio with 7/16 Stud is a race-series rocker arm engineered for big block Chevy engines requiring precision valve actuation at high RPM. This full roller design delivers the efficiency and durability demanded in competitive and performance-focused engine builds, combining aluminum construction with blue anodized finish for corrosion resistance and a professional appearance.

The 1.80 rocker ratio provides mechanical advantage that increases valve lift relative to camshaft lift, extending the effective duration of valve events—a critical factor in high-performance and racing applications where breathing efficiency directly impacts power output. The 7/16-inch stud mount secures the rocker to the engine block, meeting standard BBC cylinder head specifications. Full roller construction reduces friction at the pushrod interface, lowering parasitic power loss and heat generation during sustained high-RPM operation. Each unit is sold individually, allowing builders to source complete sets tailored to their specific engine configuration and performance objectives.

This rocker arm is built for serious engine builders, racing competitors, and performance shops working with big block Chevy platforms. Whether for bracket racing, street performance, or dyno-validated builds, the Scorpion Performance roller rocker arm addresses the valvetrain demands of engines running elevated boost, nitrous, or naturally aspirated high-displacement combinations. Scorpion Performance specializes in high-performance valvetrain components, and this product reflects their focus on precision manufacturing for demanding motorsports applications.