Ford Performance Parts Ford Racing Valve Rocker Arm Pedestal SHim Kit

Use with bolt-on roller rocker arms M-6564-A50, M-6564-B351, -C351, and -E351 to obtain correct lifter pre-load. Shim kit includes 16 thin and 16 thick shims, which can be used to reduce lifter pre-load by 0.030" (thin shim), 0.060" (thick shim), or 0.090" (thin plus thick shim).