Semi-Machined Splayed-Valve Aluminum Cylinder Head
£2,003.51
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Semi-Machined Splayed-Valve Aluminum Cylinder Head
- Main surfaces are machined
- exhaust bolt pattern, valve guides and spark plug holes are machined
- Head bolt holes, dowel holes, intake bolt holes and pushrod holes are not machined
- Valve seats, spring seats and rocker stands are not machined
- 240cc “as-cast” intake ports
- 78cc “as-cast” exhaust ports
- 45cc “as-cast” combustion chambers
- Same casting as Part Number 12480146
Aluminum Splayed-Valve Race Head Technical Notes:
- Made of 355-T7 aluminum
- No valve seats or guides provided
- Extra-thick decks for angle milling or heavy flat milling
- Extra port material (.240") for professional porting
- Completely revised intake and exhaust ports provide ultimate airflow potential
- 45cc “as-cast” combustion chambers
- Modified valve angles (16° x 4° intake and 11° x 4° exhaust)
- Designed for longer-than-stock 2.200" and 1.650" valves
- Valve spring pads accommodate 1.625" diameter springs
- Revised location angled spark plugs (14mm, 5/8"" hex, 3/4" reach, gasketed plugs)
- Designed for aftermarket shaft-mount rocker systems
- Custom-fabricated intake manifold required
- Valve cover gaskets required (P/N 10185043)
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