Dart 19574136M Cylinder Head Aluminum Big Block Chevy Pro1 355cc 2.300″ x 1.880″, Marine CNC Assembly w/ 1.625″ Dual Springs for Solid Roller Cam

Dart 19574136M Cylinder Head Aluminum Big Block Chevy Pro1 355cc 2.300″ x 1.880″, Marine CNC Assembly w/ 1.625″ Dual Springs for Solid Roller Cam

Material: RMR Cast Aluminum Alloy

Valve Angle: 24° 

Intake Port Volume: 355cc CNC

Intake Valve: 2.300”

Exhaust Valve: 1.880”

Springs: 1.625″ Dual Springs for Solid Roller Cam Max Lift: .850″

Chamber Volume: 121cc

Intake Port Shape: Rectangle

Exhaust Port Location: .300” raised

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Dart Marine PRO1 cylinder Head

Features an exclusive chromate surface finish to inhibit corrosion and extend the life of the head.

Fitted with Inconel exhaust valves to withstand the extended running time and temperatures typical of marine usage.

Maximum performance, bracket racing, Head up and super classes. Over 7,500 RPM, 540+ cubic inches, a great head for maximum effort comp or bracket cars.

The PRO1 24° 355cc CNC Head are for uncompromising performance and racing applications which favor high RPM power over low end flexibility. Best for big cubic inch, high RPM use.

Every intake port, exhaust runner, valve bowl, and every combustion chamber is 100% CNC machined on special dedicated PRO1 castings. Our 5-axis, computer controlled machining centers produce compound curves and complex shapes that no human could duplicate with a hand grinder.

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

Heads are sold individually.