SBF & Olds V8 Mag Rocker Arm 3/8 Stud/1.6 Ratio

The SBF & Olds V8 Mag Rocker Arm with 3/8 stud and 1.6 ratio from COMP CAMS is engineered for serious engine builders and hot rod enthusiasts who demand precision valve train geometry. This component is critical for anyone upgrading a Small Block Ford or Oldsmobile V8 with performance camshaft packages, where factory rocker arms fall short of supporting increased lift and duration demands. The 1.6 mechanical advantage ratio makes this rocker arm essential for builds that require enhanced valve opening and closing characteristics while maintaining reliable, repeatable performance across varied rpm ranges.

Manufactured by industry-leader COMP CAMS, this mag rocker arm features a 3/8 inch stud design that ensures secure, centered mounting on your cylinder head. The 1.6 ratio multiplier increases the distance your pushrod travels compared to valve lift, delivering aggressive valve events without requiring excessive camshaft lift—a critical advantage for maintaining valve-to-piston clearance in tight engine bays. The magnesium construction minimizes rotational mass, reducing reciprocating weight that would otherwise steal horsepower and stress valve springs during high-rpm operation. This design philosophy directly translates to faster valve response, improved cylinder charging efficiency, and more consistent combustion across all engine speeds.

This rocker arm fits Small Block Ford (SBF) and Oldsmobile V8 platforms, making it ideal for street rods, race applications, and high-performance restorations where OEM components limit potential. Whether you're building a 347 stroker, a vintage muscle car engine, or a competition-grade small block, this COMP CAMS rocker arm ensures your valvetrain can handle aggressive cam profiles without compromise. Installation requires proper pushrod length calculation and valve lash adjustment—critical steps that directly impact reliability and power output. Pair this with quality pushrods, valve springs rated for your cam specifications, and precision machine work for optimal results.