RFD 11* Big Chief

This is all of our spread port and pro stock experience tossed into one cylinder head. Dart made an excellent platform for RFD to build the most powerfull spread port head available. The BEST head for Top Sportsman , Top Dragster, Truck & Tractor pull or all out Marine. This is our most powerfull standard bore spacing head for N/A applications. 1400+ hp capable.

14ยบ version for 706" and NOS.


Name: RFD 11* Big Chief


Platform: Big Block Chevy

Price: $8,450

Price is for complete set

Cylinder Head Specifics

Bore: 4.84" Bore Space
Intake Valves: 2.52"
Exhaust Valves: 1.8"
Flow: 550-570+

Other Specs

> 11x6 Intake Valve Angle
> 2.52" Intake - 1.8" Exhaust Valves
> 55cc to 76cc Chambers
> Flows 550 to 570+ cfm depending on application
> Pro-Stock Port & Valve Seat Technology
> Fits Both Cast Single 4 & Tunnel Ram Intakes
> Several port CnC Programs
> Custom Built for Your Application
> Fits 4.84" Standard Bore Space Blocks
> Sheet-Metal Intake Packages Available

Upgrades Available

Total: 8450.00


  • CNC Ported Cylinder Heads

  • Welding, Repair & Fabrication

  • Custom CNC Machining

  • Cylinder Head Development


Monday-Friday 10am-6pm EST

545 South Birdneck Road
Suite 109 Virginia Beach, VA 23451

Phone- (757)222-9717

Fax- (757)222-9890

E-Mail- info@raceflowdevelopment.com