Dart Big Chief CNC Aluminum Big Block Chevy Cylinder Heads 18575090

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Specifications:

BrandDart
Part Number18575090
GTIN00807051003727
Cnc PortedYes
Combustion Chamber Volume56.00 cc
Cylinder Head MaterialRmr Cast Aluminum Alloy
Cylinder Head SeriesBig Chief
EngineBig Block
Engine TypeIce
Exhaust Valve Diameter1.850 in
Intake Runner Volume555.00 cc
Intake Valve Diameter2.500 in
MakeChevrolet
MaterialRmr Cast Aluminum Alloy
Port StyleOval
Port Volume555.00 cc
Product TypeEngine Cylinder Head
Valve Angle11 dd
Valve Spring TypeBare

Specifications:

Description:

Maximum Top Sportsman, Top Dragster, Pro Mod and Pro Street competition. Excellent with alcohol and nitrous, over 7,000 RPM, over 500 cubic inches. An updated Dart Big Chief 385 program incorporates a 2.500 in. intake valve for a dramatic increase in air flow. Big Chief heads have dominated in Sportsman classes since their introduction, and we have continued to improve the design with the latest Pro Stock technology. With our sophisticated CNC machining programs, we can tailor a pair of Big Chief 14 Deg CNC heads to fit your exact engine combination. Copper seats are standard and assemblies come with Titanium valves.

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