cylinder heads

BIG-BLOCK CYLINDER HEADS

Through March 31, get a $100 mail-in rebate on any two Chevrolet Performance cylinder heads.

First-Time Fit Cylinder Heads

Chevrolet Performance cylinders are tested for excellence for durable performance on street or strip.

SERVICE REPLACEMENT HEADS

Chevrolet Performance service replacement cylinder heads are direct replacements on most 1990-and-later GM Big-Block 454-cubic-inch and 502-cubic-inch engines. These cylinder heads meet GM’s stringent quality standards and provide excellent service and durability not found in used cylinder heads. The cylinder heads have rectangular intake ports, which are larger in volume and designed to enhance high-rpm horsepower. They are an ideal street head for those Big-Block enthusiasts who want more power from a street car that sees a lot of drag-strip action.

Service Replacement Head Technical Notes

  • Cast-Iron
  • Rectangular intake ports
  • Machined for 2.180"/1.880" (3/8" stems) valves
  • Non-adjustable rocker arm design
  • Heads have heat risers
  • Will not work on production Mark IV cylinder blocks

ALUMINUM BOWTIE STREET CYLINDER HEADS

Chevrolet Performance Bowtie high-performance street 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.

Vortec Bowtie Cylinder Head Technical Notes

  • Made from 356-T6 aluminum
  • Available in rectangular- or oval-port designs
  • 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
  • Use intake gasket P/N 12366985 and bolt kit P/N 12367959
  • Use head gasket P/N 12363414 for bores to 4.370" and 
P/N 12363413 for bores 4.470" to 4.540" (Mark IV)
  • Use head gasket P/N 12363412 for bores to 4.370" and 
P/N 12363411 for bores 4.470" to 4.540" (Gen V, VI)
  • 
Use head bolt kit P/N 12367779  

BOWTIE RACE CYLINDER HEADS

Monster-cubic-inch stroker Big-Blocks need lots of air to maximize their performance potential and Chevrolet Performance Bowtie race cylinder heads are designed for that task. They are made of 356-T6 aluminum with huge, raised intake ports, larger valves, smaller combustion chambers and two additional head bolts for increased clamping force.

Bowtie Race Cylinder Head Technical Notes

  • 356-T6 Aluminum
  • 
9/16" thick decks
  • 
No heat risers
  • 
Will work on Mark IV cylinder block
  • 
Heli-coiled 7/16" screw-in rocker stud holes
  • As-cast intake and exhaust ports  

DRCE PRO STOCK RACE CYLINDER HEADS

Chevrolet Performance DRCE (Drag Racing Competition Engine) Pro Stock cylinder heads are the choice of professional drag racing champions. When races are won by thousandths of a second, there’s no room for second-best parts.

DRCE Pro Stock Race Cylinder Head 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 at milling
  • Requires professional porting and machining
  • High-capacity self-purging water jackets
  • Custom aftermarket rocker arm assemblies required

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.