Roller Rocker Arm Set 1.5 Shaft-Mount MOPAR Black Fits Small Block Chrysler Engines ProformThese beautiful new aluminum shaft mount roller rockers are perfect for your small block (LA) engine. The bronze bushings provide a friction free environment for the rocker to pivot on. The system is designed so the oil comes up through the shaft and into the rocker underneath the bushing. Channels and holes in the bushing allow for the oil to lubricate the pivot area. The race proven roller tip not only unleashes horsepower, it also lengthens valve