Description & Size Guide
GORILLA M8 ROCKER SHAFTS SHIMS, Qty. 6 of 3 thicknesses: 0.003", 0.005", 0.010" Quiet your engine and reduce wear by tightening the rocker arm to cylinder head end play clearance. FEULING recommends an ideal side clearance of 0.0035" - 0.0045" for optimum rocker arm oil psi and noise reduction. Will benefit stock engines and highly recommended for engines with high lift camshafts or higher pressure valve springs. NOTE: These shims should be installed by a professional, one who can make correct end play measurements and can install and tighten rocker shaft nuts/bolts without damaging shims. Check out our #1232 Gorilla rocker shafts and ARP stud/nut kit to further bulletproof your valve train! MADE IN U.S.A.
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