Quick Fuel Technology Carburetors

Let us Assist you in selecting the correct carburetor for your application.  Our 40 years of carburetor experience will assure the correct series and size for your specific application.

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Special Offer 10.25.11 through 12.24.11

FREE Digital Dial Back Timing Light W/Digital Tach

with any P - Q - Q Race or QFX Series Carburetor

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Carburetor CFM Calculator

 

QFX

QFX 4700 Carburetor 1050CFM 1.710V

4500 Series Base Plate

2 Circuit

1050CFM Gas QFX -1.710" venturi X 2.000" throttle bore - 2 Circuit - The ultimate drag race carburetor is the QFX with it's new raised venturi design. Improved throttle response and increased consistency are all part of the package. Whether you use a throttle stop or run heads-up this carburetor will help you get to the winner's circle.
  • QFX All new 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
  • External Linkage

 

FX 4700   $972.56

QFX

4500 Series Base Plate

3 Circuit

1050CFM Gas QFX -1.710" venturi X 2.000" throttle bore - 3 circuit The ultimate drag race carburetor is the QFX with it's new raised venturi design. Improved throttle response and increased consistency are all part of the package. Ideal with throttle stop or run heads-up.
  • QFX All new 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

 

FX4710   $1004.06

QFX

4500 Series Base Plate

3 Circuit

 

1050CFM Gas QFX -1.750" venturi X 2.000" throttle bore - The ultimate drag race carburetor is the QFX with it's new raised venturi design.

This is our "Big Venturi" 1050 CFM  - Ideal if you need something between a 1050 and 1150 CFM 

 

 

FX 4710-1 $1044.23

QFX-2

4500 Series Base Plate

3 Circuit

2 x 4 Applications

1050CFM Gas QFX -1.710" venturi X 2.000" throttle bore - Setup For 2X4 Use - The ultimate drag race carburetor is the QFX with it's new raised venturi design. Improved throttle response and increased consistency are all part of the package
  • QFX All new 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 (wedged for 2X4)
  • Viton .130" Needles and Seats
  • Billet Aluminum annular booster inserts

 

 

FX 4710-2 ea. $1004.06

 

QFX-2

4500 Series Base Plate

3 Circuit

2 x 4 Applications

1050CFM Gas QFX -1.750" venturi X 2.000" throttle bore - Setup For 2X4 Use - The ultimate drag race carburetor is the QFX with it's new raised venturi design. Improved throttle response and increased consistency are all part of the package.
  • QFX All new 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 (wedged for 2X4)
  • Viton .130" Needles and Seats
  • Billet Aluminum annular booster inserts

 

 

FX 4710-3 ea. $1044.23

 

 

QFX 4500 Series

1050 Alky carbs
  • Stainless Steel .150" Needles and Seats

 

 

1050 E85 Carbs

  • Stainless .130" Needles and Seats

 

 

FX4710A   $1148.44

 

 

 

FX4710E85 $1123.13

RACE Q

 

Drag Race Carburetors 750-850-950-1050

Dedicated and designed for the hardcore drag racer, this carburetor is easy to adjust and will provide unmatched performance. Made from premium aluminum throughout with billet metering blocks and throttle body it's lightweight and durable. Each carburetor is hand-assembled in the USA and individually engine tested - it's ready to race out of the box.

  • 4-corner idle
  • Screw-In airbleeds that have been recessed and moved out of the air way for less restriction
  • Race style aluminum main body with upgraded downleg race boosters
  • 5-Emulsion billet metering blocks with screw-in bleeds for every circuit fully adjustable
    Lightweight aluminum fuel bowls with internal baffles, raised roof, re-designed fuel entry orifice and built-in sight windows
  • Quick-change jet plugs - allow for jet changes without removal of the fuel bowl (required screw driver is included)
  • Billet throttle body with Teflon® coated and sealed shafts that have been slabbed for added air flow, stainless steel throttle plates, and secondary adjustable cam bracket.

  • Each throttle body is machined for both 4150 or 4500 style manifolds

 

 

Downleg 2 circuit RQ1050...$917.00

 

 

Annular 2 circuit RQA1050...$931.00

 

 

Downleg 2 circuit           RQ1050-3...$1001.00

 

 

Annular 3 circuit             RQ1050-3AN...$1015.00

 

RQ750...$770.00

RQ750Annular...$826.00

 

RQ850...$805.00

RQ850 Annular...$861.00

 

RQ950...$840.00

RQ950 Annular...$896.00

 

P-Series

3 Circuit

Annular or Downleg

P-Series Circle Track Carburetor 1050CFM Annular Boosters -3 Circuit - Circle Track dedicated carburetor. This is the pinnacle of circle track carburetor technology. Billet metering blocks, Super Duty™ throttle body and fuel bowls. This carburetor will help you get the most out of you high-rpm combination, Annular or Downleg Boosters
  • Screw-In restrictions throughout
  • 5-stage emulsion 3-Circuit metering blocks with tuneable intermediate
  • Light-weight aluminum construction
  • O-Ring AN Fuel Inlets
  • Slabbed and sealed Teflon™ coated throttle shafts
  • Wedge floats for consistent fuel level control  

 

 

   

 

 

 

 

 

Annular P-1050-3ANCT

...$1096.20

 

 

 

 

 

 

 

 

 

 

Downleg P-1050-3...$1096.20

Q-Series 2 BBL CTA

 

Q-Series Replacement for 4412 500CFM GAUGE RULE CTA - Setup for alcohol fuel - features stainless hardware, billet metering block, and wedge float. Check with sanctioning body for legality before purchase.

 

 

Q500-CTA...$460.04

Q-Series 2 BBL CT

Q-Series Replacement for 4412 500CFM GAUGE RULE CT - Sportsman style carburetor that will pass most tech inspection depending on rules - please check with your sanctioning body before purchase. Features modified emulsion and wedge float.

 

 

C500CT...$408.10

 

Q650-1050

Q- Series Carburetors 650-1050 CFM DRAG - Built for the ultimate blend in performance and drive-ability. This carburetor features jet extensions and a notched float with all the tuning you features you would expect from a carburetor that's ready to race. Street duty is no sweat for the Q-Series with it's built in vacuum tubes and 4-corner idle.
  • Aluminum main body, and fuel bowl with QuickSet sight windows on both sides make for easy float adjustment
  • Billet metering blocks and throttle body ensure leak and porosity-free sealing between circuits
  • Each carburetor is hand-assembled and engine tested in the USA!

 

Mechanical

 Q650...$578.81

Q750...$632.10

Q850...$676.20

Q950...$720.30

Q1050...$771.75

 

Vacuum

Q650V...$578.81

Q750V...$632.10

 

Annular Boosters

Q750A...$690.90

Q850A...$757.05

Q950A...$801.15

Q1050A...$823.20

 

SS-Series Mechanical

Mechanical Secondary Street Carburetor - designed for street strip applications. Jet extensions and notched float make this carburetor strip ready while 4-corner idle, electric choke, and screw-in air bleeds help tune it for the street. All the features of our race carburetors merged into one street-friendly package.

650-750-830

 

 

Gas Downleg

SS650...$511.88

SS750...$525.00

SS830...$538.13

 

E85 Downleg

SS650...$574.00

SS750...$616.00

 

Gas Annular

SS650...$551.25

SS750...$564.38

 

Vacuum Secondary Street Carburetor - designed for street strip applications. Jet extensions and notched float make this carburetor strip ready while 4-corner idle, electric choke, adjustable secondary housing, and screw-in air bleeds help tune it for the street. All the features of our race carburetors merged into one street-friendly package.

 

 

Vacuum Secondary

SS680V...$511.88

SS735V...$518.44

SS780V...$525.00

HR Series

The Hot Rod Series is the latest line of carburetors that are designed for the street enthusiast. Made from light-weight aluminum castings and packed full of features, these carburetors are sure to make your rod, muscle car, or street machine run its' best!

Hand assembled and engine tested in the USA! 

Special Note: These carburetors are not available Direct from Quick Fuel Contact us at: 541-942-5920 for application and pricing.

  • Available in both vacuum and mechanical secondary

  • A Quick Set electric choke with one wire hookup for years of trouble free starting

  • Dual inlet fuel bowls with Quick Set sight windows on both fuel bowls for safe and easy float level adjustment 

  • Vacuum secondary carburetors have a Quick Set housing that is adjustable by simply turning a screw - no more spring assortments to keep up with or torn diaphragms

  • 4-corner idle for smooth and efficient idle quality

  • Screw-in air bleeds for quick and unsurpassed tuning capabilty

  • Screw in idle feed restrictions 

  • Non-stick gaskets throughout for easy service

  • The QFT 4-door ™ power valve with a strong diaphragm and blow-out protection in the throttle body

  • Universal throttle lever with sealed throttle shafts for years of smooth operation 

  • Full vacuum accessory ports for PCV, power brakes, and timed spark advance

 

 

Mechanical Secondary Carburetors

HR-600..$378.00.

HR-650...

HR-750...

HR-850...

 

Vacuum Secondary Carburetors

HR-580-VS...$378.00

HR-680-VS...

HR-780-VS...

 

NEW! Slayer Series Carbs

 

600 CFM 1.312 venturi 1 9/16" throttle bore

 

750 CFM 1.375" venture 1 11/16" throttle bore

600 CFM...$299.00

 

700CFM...$299.00

 

Selecting the Correct Carb

 

 

Search Parts On Sale-Specials Tech Help Section Latest News Contact

 

Machine Shops, Speed Shops-Engine Builders

Please call for Special Reseller Pricing  541-942-5920

Email tech@4secondsflat.com

 

541-942-5920

MONDAY - FRIDAY 6am to 4pm Pacific time

Just Click the button Below to Chat with our Technical Staff on any of our over 300 products.

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Last update 10.25.11