Roller Rocker Arms, Comp Cams, Magnum, Big Block

Competition Cams' unique forge-cast roller tip design reduces friction. As a result it has been dyno tested to produce 15-20 horsepower increases and it makes valve stems and guides last longer. Magnum Rollers fit 65-74 big block engines (1.70 ratio). Each rocker is supplied with a rocker ball and lock nut. Set of 16.