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Dart Machinery, LTD. stands behind each product we manufacture 100%. Each component undergoes a detailed manufacturing process that involves the hundreds of calculated and precision steps to ensure the finest quality possible.
PRO1 23 230cc Port

PRO1 23° 230cc

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Description

Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+ cubic inch engines.

PRO1 23° 230cc Platinum series heads are intended for maximum effort competition engines with large displacements and very high RPM usage.

Long wearing Bronze valve guides, screw-in studs, multi-angle intake seats with hardened, radiused exhaust seats are standard. Best of all, our precision cast ports produce outstanding airflow without time consuming porting.

Assemblies include Stainless Steel valves, premium springs, locks, retainers, studs, guide plates and seals.

Heads are sold individually.

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Material: RMR Cast Aluminum Alloy

Valve Angle: 23° (stock)

Intake Port Volume: 230cc

Intake Valve: 2.080”

Exhaust Valve: 1.600”

Chamber Volume: 64 or 72cc

Plug Types: Straight or angle

PRO1 23° 230cc – Aluminum (Straight Plug Heads)

64cc Combustion Chambers

11720040P – Bare Head

11721143P – 1.550” Dual Springs for Solid Roller Cam .660”


72cc Combustion Chambers

11820040P – Bare Head

11821143P – 1.550” Dual Springs for Solid Roller Cam .660”


PRO1 23° 230cc – Aluminum (Angle Plug Heads)

64cc Combustion Chambers

11710040P – Bare Head

11711143P – 1.550” Dual Springs for Solid Roller Cam .660”


72cc Combustion Chambers

11810040P – Bare Head

11811143P – 1.550” Dual Springs for Solid Roller Cam .660”

PRO1 230 Tech Sheet – H16

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