SBF Roller Rocker Arm 1.65 Ratio 7/16 Stud

The SBF Roller Rocker Arm 1.65 Ratio 7/16 Stud by Scorpion Performance is purpose-built for small block Ford engines demanding serious valve train upgrade. Designed for serious engine builders and high-performance enthusiasts, this roller rocker arm replaces factory stamped steel rockers with precision-engineered race components that unlock valve lift potential and improve cylinder head breathing. The 1.65 ratio amplifies camshaft lift and duration, translating to greater valve opening and improved scavenging in modified or naturally aspirated builds.

This race-series rocker features a full roller design that minimizes friction across the cam lobe interface—critical when running aggressive profiles or high spring pressures. The aluminum body with blue anodized finish reduces weight while maintaining rigidity, and the 7/16-inch stud mount integrates with common SBF cylinder head patterns without modification. The 0.150-inch offset geometry positions the roller tip for optimal contact and durability across varying lift curves. Each arm is individually engineered to withstand race-level valve events, delivering consistent lift ratios across the RPM range without deflection.

SBF rocker arms in this ratio excel in naturally aspirated, supercharged, or nitrous-oxide-fed small block applications where maximizing valve event control matters. Installation pairs best with performance camshafts, stainless steel pushrods, and roller lifters to realize the full benefit of the increased mechanical advantage. Buyers should confirm existing cylinder head stud spacing and confirm pushrод length compatibility before ordering—this is a direct bolt-on for stock or aftermarket SBF heads equipped with 7/16-inch studs.