Big Block Chevy Rectangular Port Cylinder Head, 572/720R Engine

Name: Big Block Chevy Rectangular Port Cylinder Head, 572/720R Engine
Brand: CHEVROLET PERFORMANCE
SKU: 809-88961160
Price: 1728.38 USD
Availability: InStock

^$1,728³⁸

Ships on 09/11/2026

Lowest Price Guarantee

Street Cylinder Heads

Rectangular Port

572/720R Engine
118cc Combustion Chamber
2.25" Intake/1.88" Exhaust
Mech Roller to .720
310cc Intake Port
118cc Exhaust Port - Raised 5/8''
Completely Assembled, Sold Individually

Assembly notes:
Use intake gasket 809-12506106
Intake Bolt Kit 809-12367959
Mark IV Use Head Gasket 809-12363413
Gen V & VI Use Head Gasket 809-12363411
Use Head Bolt Kit 809-12367779
Technical Specifications:
Intake Valves: 12366987
Exhaust Valves: 88963128
Retainers: 12366990
Valve Locks: 12366992
Valve Springs: 88963933
Valve Seals: 88963936
Valve Spring Shims: 88963937
Rocker Arm Studs: 3921912
Pushrod Guideplates: 3860038

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

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