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Chevrolet Performance 25534404

DRCE 3 Race Cylinder Head Casting, Raw aluminum casting, not machined

Chevrolet Performance 25534404

809-25534404

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Estimated ship date 11/27/17 if Ordered Today
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Chevrolet Performance 25534404 DRCE 3 Race Cylinder Head Casting, Raw aluminum casting, not machined $1,423.27
DRCE 3 Race Cylinder Head Casting
  • Raw aluminum casting, not machined
  • Designed to work on DRCE 3 block 809-25534406

  • Chevrolet Performance 25534404 Details

    Race Cylinder Heads

  • Rectangular Port

    Technical Notes:
  • T355-T7M aluminum construction
  • Complies with NHRA Pro Stock 500-cid, 4.900'' bore spacing rules
  • Symmetrical intake port layout
  • Intake and exhaust ports are extremely small ''peanut ports''
  • 7/8'' thick decks allow for angle milling or heavy flat milling
  • Requires professional porting and machining
  • High-capacity self-purging water jackets
  • Custom aftermarket rocker arm assemblies required

  • Specifications:

    Manufacturer's Part Number:
    25534404

    Chevrolet Performance Bow Tie Cylinder Heads are an ideal combination of street drivability and drag strip performance. They provide a broad power range with ample low-end torque, excellent throttle response, good mid-range torque and enough top-end power to beat your competitors to the finish line! Bow Tie Street Cylinder Heads have rectangular or oval intake ports. Rectangular intake ports are larger in volume and designed to enhance high-RPM horsepower. These heads are best for vehicles that see frequent drag strip action. Cylinder heads with oval intake ports are smaller in volume and designed for greater low-RPM torque. Oval port heads are best for street applications where lots of bottom-end off-the-line power is desired.

    Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance potential. They're made of 356-T6 aluminum with huge, raised intake ports; larger valves; smaller combustion chambers; and two additional head bolts for increased clamping force. The runners are purposely left smaller to accommodate custom porting.

    Features
  • 356-T6 aluminum
  • Rectangular or oval ports
  • Will work on Mark IV and Gen V/VI blocks
  • 9/16" thick decks
  • As-cast intake and exhaust ports
  • No heat risers
  • 1.55" valve spring seat diameter
  • Heli-coiled 7/16" screw-in rocker stud holes
  • Designed for use with 3/8" pushrods

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