How To Buy Used Roller RockersThere are many styles of overhead-valve rocker arms: shaft-mount, pedestal-mount, and stud-mount. Sometimes the aftermarket will take an engine that came stock with a pedestal (like a 5.0L pushrod Ford) and convert it to another style.There are many styles of overhead-valve rocker arms: shaft-mount, pedestal-mount, and stud-mount. Sometimes the aftermarket will take an engine that came stock with a pedestal (like a 5.0L pushrod Ford) and convert it to another style. As for shaft mounts, there are the stock-type ones that place all the rocker arms on a single ... Read More