S&S Evolution

S&S Cylinder Heads

- reworked to add new life to your S&S engine
- modifications can be done on all size engines (88”, 96”, 113”, etc)
- a healthy compression increase is applied
- heads are fully ported, resurfaced, and have had a radius valve job
- contains new guides (manganese bronze), springs (titanium) and seals (Viton)
- valves will be replaced with S&S valves if necessary
- if using their special shaped chamber and piston combo, pistons will be flycut for a compression increase

We also recommend using our HQ-21835 ignition, HQ-8715 venturis, and our HQ-0023, HQ-0026, or HQ-0028 camshaft depending on compression and engine size.

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