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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.
PRO2 24 380cc CNC

PRO2 24° 380cc CNC

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Product Description

Maximum performance, bracket racing, heads up and super classes. Over 7,500 RPM, 500+ cubic inches, a great head for maximum effort comp or bracket cars.

Dart’s PRO2 24° 380cc CNC heads have been revised with larger 2.350” intake valves and a revised port design for improved airflow and a substantial horsepower increase!

These cylinder heads were designed to make competitive engine building easier and less expensive by incorporating the rugged features of our famous Race Series casting into a ready to use, professional quality competition cylinder head. Every intake port, every exhaust runner, every valve bowl, and every combustion chamber is 100% digitally CNC machined for the ultimate in consistency.

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

Heads are sold individually.

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Material: RMR Cast Aluminum Alloy

Valve Angle: 24° 

Intake Port Volume: 380cc CNC

Intake Valve: 2.300″/2.350”

Exhaust Valve: 1.880″/1.850″

Chamber Volume: 124cc

Intake Port Shape: Rectangle

Exhaust Port Location: .500” raised

PRO2 380cc CNC HEADS w/ 2.300”/1.880” VALVES

19674030 – Bare Head

19674136 – 1.625” Dual Springs for Solid Roller Cam .850”

19674139 – 1.650 Triple Springs for Solid Roller Cam .900”


PRO2 380cc CNC HEADS w/ 2.350”/1.850” VALVES

19674080 – Bare Head

19674186 – 1.625” Dual Springs for Solid Roller Cam .850”

19674189 – 1.650 Triple Springs for Solid Roller Cam .900”

PRO2 380 Tech Sheet – H42

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