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380 Pro 2 CNC (2.300 x 1.880) 1.625 D Spring

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380 Pro 2 CNC (2.300 x 1.880) 1.625 D Spring

PART #: 19674136

(price subject to change without notice) $2,502.92

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380 Pro 2 CNC (2.300 x 1.880) 1.625 D Spring380 Pro 2 CNC (2.300 x 1.880) 1.625 D Spring

380 Pro 2 CNC (2.300 x 1.880) 1.625 D Spring Product Description:

 380cc CNC Ported    2.300 x 1.880    1.625 Double Spring

Dart's new PRO2 380cc heads are the next evolution of our Big-Block Chevy line up. As engine displacements continually get bigger, we saw the need for a larger conventional-style cylinder head to extract the maximum performance from these huge motors.
The PRO2 cylinder heads were designed to make competative 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.
The new PRO 2 head's 380cc intake runners are paired with 144cc exhaust ports. Intake valves are 2.300 inches, and the exhausts measure 1.880 inches in diameter. Brass head bolt tubes are inserted between adjacent intake runners to allow the ports to be widened. The high-velocity raised exhaust ports are modeled on our own Pro Stock heads using airflow concepts that dramatically improve cylinder scavenging and the engine’s ability to accelerate quickly. Multi-angle intake valve seats direct the air-fuel mixture into the chamber like an airfoil, reducing turbulence and preventing fuel separation. Fully radiused exhaust seats provide the smoothest possible transition into the ports for hot exhaust gases. Dart's new CNC-machined PRO 2 aluminum cylinder heads with 380cc intake ports are just what the doctor ordered for large displacement big-block Chevrolet racing engines.


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