When most of us think about performance parts, roller rockers are usually not the first parts to come to mind. However, a good set of roller rocker arms can not only reduce friction, but also they are ...

If they're running a big mechanical cam, production Ford V-8 cylinder heads with nonadjustable, pedestal-type rocker arms can be machined to make the Ford valvetrain fully adjustable with screw-in ...

Overhead cams are a more efficient method of actuating the valves than with a pushrod, but someone in Detroit never got the memo. And thank goodness they didn't. With production pushrod mills turning ...

In the valvetrain of your typical pushrod engine, the rocker arm is a critical component that also is an excellent tuning device. To properly tune with rocker arms, though, you need to understand how ...