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QFX 4712 Carburetor 1250CFM

3-Circuit

?
CFM

PART# FX-4712

$1,359.95   Suggested Retail
$1,101.56   Holleydays Price
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Overview

Serious drag racing demand a serious drag racing carburetor, and the QFX-Series stands as the flagship model in QFT's lineup. Raised air horns improve entry angle into the venturi while ensuring undisrupted flow over the air bleeds. Annular boosters with CNC-machined billet aluminum inserts provide increased air flow, a stronger signal, and less turbulence. QFX carbs offer unparalleled fuel atomization with annular boosters specific for either gas, methanol, or E85 fuels. Five-emulsion billet metering blocks and four-corner idle circuits offer flexible tunability that today's high-horsepower engines demand. To cover a broad range of applications, methanol- and E85-compatible models, as well as two- and three-circuit fuel systems, are available. Ready to run out of the box, the QFX-Series carburetor will help you get to the winner's circle. •QFX aluminum main body w/raised venturi •Billet aluminum metering blocks with screw in restrictions •Aluminum fuel bowls with dual sight windows and fuel inlets •Nitrophyl® Floats (notched rear) and jet extensions •Viton .130" Needles and Seats •Billet Aluminum annular booster inserts •QuickLink™ adjustable secondary opening adjustment •Hand assembled and engine tested

Specs

Barrels4
Billet ColorRed
BoosterAnnular
BrandQuick Fuel
CFM1250
ChokeNone
Circuit3
Emission Code3
FinishShiny
FuelGasoline
Fuel SystemCarbureted
High Speed Air Bleed33
Idle Air Bleed Size42
Intermediate Air Bleed80
MaterialAluminum
ModelQFX Series
Primary Main Jet94
Primary Power ValveN/A
Primary Pump Nozzle Size42
Product TypeCarburetor
SecondariesMechanical
Secondary Main Jet94
Supercharged ApplicationNo
Throttle Bore2.125 inch
Part NumberFX-4712

Emissions

This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

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