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Pro1 Chevrolet Big Block Head – 245.00 CC Port, 66.00 CC Chamber

Your Price: $2,308.82

SKU: 11981163P

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Dart Pro1 CNC Aluminum Big Block Chevy Cylinder Heads

Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+ cubic inch engines. Dart PRO1 23 Deg 227cc CNC heads are professional quality competition cylinder heads. We applied the airflow technology developed in our championship winning Pro Stock engine program to produce these state of the art heads. Every intake port, every exhaust runner, every valve bowl and every combustion chamber is 100% CNC machined on special dedicated PRO1 castings. These heads are ideal for high compression, big cubic inch small blocks and are great for supercharged applications. Standard valve angle and spacing are retained to allow use of off the shelf pistons and valve train components. Hardened exhaust seats are compatible with unleaded gasoline. Manganese Bronze valve guides extend cylinder head life.
Requires use of .150″ offset intake rockers; Heads are sold individually

SKU: 11981163P Categories: , ,

GTIN: 00807051005776



CNC Ported


Combustion Chamber Volume

66.00 CC

Exhaust Valve Diameter

1.600 IN

Intake Valve Diameter

2.100 IN

Port Volume

245.00 CC



Valve Angle

23 DD

Valve Spring Diameter

1.550 IN

Valve Spring Maximum Lift

0.700 IN

Engine Type