Need custom length pushrods? These solid pushrods are made from heat treated .065” wall seamless 3/8” chrome moly tubing and are supplied with full radius “Mae West” tips (drilled for oil flow) for use with the highest lift cams. They are supplied extra-long with one end unfinished, to be custom fitted by the engine builder. Cut, drill end .250”, ream 17/64”, press in tip. Use with adjustable lifters or customize length for hydraulic lifter pre-load. Sold each.
S&S roller rocker arms are forged from 4140 steel, heat treated and shot-peened for additional strength and protection from long-term fatigue. These rocker arms ride on 3/4” wide bushings (stock is 1/2”), and feature a modified lubrication system for unrestricted roller oiling. Because the bushings are wider, we recommend new rocker shafts are used during installation if original shafts show wear in the bushing area. Available for Twin Cam® and EV engines in stock 1.62:1 or higher lift 1.725:1 ratio (modifications required), and Shovel engines in 1.5:1 ratio.
JIMS® Roller Rocker arms are made from aerospace quality 4340 chrome moly steel, CNC machined and specially heat treated for durability. Critical areas of the arm are strengthened and material is removed where not needed for lighter weight. A roller tip made from bearing grade steel is incorporated to reduce valve and guide wear and 660 bronze bushings are used for stability, longevity and strength. Available for EV and Twin Cam® engines in stock 1.625:1, or higher 1.745:1 ratio for additional lift at the valve (modifications required). Shovel arms are 1.5:1 ratio. Uses stock or JIMS replacement rocker shafts (not included).
JIMS® rocker arm shafts are perfect for rebuilds or new construction, precision-ground right here in the USA. A special model for EV and Twin Cam® racing engines is available that is drilled and tapped on one end for grease fittings, designed to be used on engines that run “dry” top ends (no oil feed to the rocker arms). Sold each.
509S: 74”-84” Shovelhead high output cam. Best with 9.5+:1 compression, ported heads and high flow carb. Extra-wide torque curve with great horsepower numbers. Solid or aftermarket hydraulic lifters required.
In compliance with ARB emissions laws, this product is not sold or shipped to California.