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Ed Rinke Performance

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Aluminum Bowtie Street Cylinder Heads

Aluminum Bowtie Street Cylinder Heads
Chevrolet Performance Bowtie high-performance street cylinder heads arean 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. Chevrolet Performance Bowtie street cylinder heads are designed for high-performance applications, with thick deck surfaces and high-velocity airflow passages. The heads are manufactured to precise machining tolerances. Chevrolet Performance Bowtie street cylinder heads are available in either rectangular or oval intake port configurations. Rectangular intake ports are larger in volume and are 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 are 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.

Bowtie Street 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