Aluminum Roller Rockers/shafts - 1.6 Ratio - New

Our brand new aftermarket aluminum roller rockers are an unbelievable value! Made out of aircraft quality certified 2024 aluminum alloy, these arms are formed using a hydraulic extrusion process under 1500 tons of pressure, giving these arms an incredible 60,000 PSI tensile strength! They are fully CNC machined, and finally anodized for additional durability and corrosion protection. These sets come complete with 16 arms, 2 shafts, 16 adjusters and 16 locknuts, and are available in 1.5 and 1.6 ratios.

Our rockers use extra heavy duty NSK licensed large fulcrum needle bearings between the arm and the shaft (shown in the "view additional images" button) so friction is reduced (and therefore additional horsepower is gained) between the arm and the shaft, as well as between the valve and the the roller tip. These bearings are rated up to valve spring loads of 600 pounds open pressure (which includes most cams in the .500-.600" lift range.) Be careful not to confuse these with some other rockers on the market which offer a much cheaper and easier to manufacture design of a solid aluminum rocker which offers the roller tip, but runs the aluminum of the rocker body directly against the shaft, a setup which produces much more friction and wears the arms out extremely quickly. Since these feature the roller bearing, and a super hard roller tip hardened to 60 on the Rockwell C scale, these will work just as well on a high mileage street car as they do on a drag only setup. They also feature pressurized oiling of the pushrod ball/cup area, and a generous valve spring clearance relief in the underside of the body (shown in the "view additional images" button)

When purchasing these rocker arms, we strongly recommend using our .650" spacers listed separately (part #113-1018) to locate the arms on the shafts, and our shim package (part #105-1018)  to center each arm exactly over each valve tip, and set the endplay, which should be about .015"-.030". For shaft holddowns, we recommend using our aftermarket billet aluminum holddowns listed separately (part #200-1032.) These are what is shown in the above pictures. Please note again they ARE NOT INCLUDED automatically with these sets.