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Pro1 Chevrolet Big Block Head – 451.00 CC Port, 97.00 CC Chamber

Your Price: $4,384.91

SKU: 19775199

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Dart Pro1 20 Deg (As-Cast and CNC ) Aluminum Big Block Chevy Cylinder Heads

Maximum competition, high torque, high compression low dome. 8000+ RPM, 500+ cubic inches. Dart developed the first successful aftermarket aluminum heads for the big block Chevy engine platform and we’ve done it again! We have continued to refine our revolutionary designs through our in house research and development program and now offer the latest of our advancements in the PRO1 20 Deg 440cc Aluminum cylinder heads. The Dart PRO1 20 Deg heads deliver superior performance, by utilizing 440cc runners in a raised asymmetrical port design, and feature a 20 Deg rolled valve angle with redesigned shallow combustion chambers. These heads are ideal for maximum effort naturally aspirated, big boost forced induction, or nitrous applications.
Designed to use conventional BBC intake manifolds; Requires use of shaft mounted rockers; Requires use of shaft mounted rockers; Requires special pistons; HIP (Hot Isostatic Pressed) Casting; Solid heads available by special order; MUST use Copper seats with Titanium Valves; Heads are sold individually

SKU: 19775199 Categories: , ,

GTIN: 00807051012231



CNC Ported


Combustion Chamber Volume

97.00 CC

Exhaust Valve Diameter

1.800 IN

Intake Valve Diameter

2.400 IN

Port Volume

451.00 CC



Valve Angle

20 DD

Valve Spring Diameter

1.650 IN

Valve Spring Maximum Lift

0.900 IN

Engine Type