SBC Roller Rocker Arm - 1.6 Ratio 7/16 Stud

The Scorpion Performance SBC Roller Rocker Arm with 1.6 ratio and 7/16 stud mount is a race-proven valvetrain upgrade designed for small block Chevy engines where maximum flow and reliability are non-negotiable. Built for serious engine builders and high-performance enthusiasts, this full roller rocker arm replaces OEM stamped rockers to unlock significant horsepower gains through improved valve lift geometry and reduced friction. Whether you're building a street-strip 350, a dedicated race motor, or a resto-mod with modern performance aspirations, this component delivers the mechanical advantage that separates a good build from a great one.

Constructed from aerospace-grade aluminum and finished in hard-anodized blue, the 1.6 ratio rocker arm increases valve lift by 60 percent compared to a 1:1 ratio, translating to deeper port filling and extended valve duration at peak lift. The full roller design—featuring needle bearings at the pushrod and valve tip contact points—eliminates the metal-to-metal wear found in traditional flat-tappet arms, reducing parasitic drag and improving valvetrain stability at high RPM. The 7/16 inch stud mount interfaces with standard small block Chevy cylinder head studs, making installation straightforward for experienced builders; each arm weighs just 0.5 lbs, keeping rotating mass minimal and reducing inertial losses during rapid valve transitions.

This rocker arm is ideal for engine builds running solid-roller or hydraulic roller camshafts where aggressive lift profiles demand precise control and durability under sustained high-RPM operation. Installation requires a matching set of arms (sold individually), compatible pushrods cut to specification, and proper valvespring pressure tuning—consult your cylinder head and cam manufacturer for exact requirements. Perfect for race engines, performance crate motor builds, and vintage muscle car restorations, the Scorpion Performance roller rocker transforms cam profile potential into real-world cylinder head flow and combustion efficiency gains.