Improper assembly including failure to establish proper measurements and clearances can cause extensive engine damage which is solely the responsibility of the installer. All kits are compatible with S&S 90-2013 (intake) and 90-2012 (exhaust) valves supplied with Special Application heads.īecause of special assembly procedures required with high-lift camshafts and related parts, S&S recommends that these parts be installed by a professional mechanic having considerable experience with parts of this nature. ” diameter valves and supplied titanium collars or exact Kits are designed for “no shoulder” valve guides. It remains the engine builder’s responsibility to confirm all measurements and clearances during installation. See following paragraph for part numbers. NOTE - Kit 90-2079 is a “bolt-in” installation for earlier S&S street heads equipped with. These kits are intended primarily for use on S&S Special Application heads.660-lift kit 90-2079 can also be used on S&S Street Heads normally supplied on S&S engines, or any other head which can accept a 1.650” outer spring O.D. Valve spring and collar kits 90-2079, 90-2080 and 90-2081 areĭesigned for street and race applications that utilize camshafts with extremely high lifts requiring higher than normal spring pressures.
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