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, 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 P/N 12480146

Tech Specs

Part Number: 12480147
Description: Semi-Machined Splay
Casting Number: 10185040
Material: Alum
Port Type: Splayed
Valve Angle: Splay
Chbr CC`s: 45
Int Vlv: 2.200
Exh Vlv: 1.650
Exh Port: Splayed
Plug Type: Angled
Heat Riser: No
Rocker Stud: Shaft
Notes: Semi-mach 12480146

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