Dart 19000112M Cylinder Head Aluminum Big Block Chevy Pro1 275cc 2.250″ x 1.880″ Oval Port Marine, Assembly w/ 1.550″ Dual Springs for Hydraulic Roller Lifters

Dart 19000112M Cylinder Head Aluminum Big Block Chevy Pro1 275cc 2.250″ x 1.880″ Oval Port Marine, Assembly w/ 1.550″ Dual Springs for Hydraulic Roller Lifters

Material: RMR Cast Aluminum Alloy

Valve Angle: 24°

Intake Port Volume: 275cc

Intake Valve: 2.190”/2.250”

Exhaust Valve: 1.880”

Springs: 1.550″ Dual Springs for Hydraulic Roller Cam Max Lift: .700″

Chamber Volume: 110 or 121cc

Intake Port Shape: Oval

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.

For street performance, mild bracket racing and marine. Under 6,800 RPM, under 500 cubic inches. Excellent mid-range torque and power, good for heavier vehicles.

A new high velocity oval port design makes this head an ideal choice for street cars and trucks. The PRO1’s race proven features include rolled valve angles, improved spark plug location, extra long intake valves, raised exhaust ports, and fast burn chambers.

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, guide plates and seals.

Heads are sold individually.