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Race-Q Series Carburetor 650CFM Drag Race

Limited To Stock On hand 4150

PART# RQ-650

Not Available Online

This part is limited to stock on hand. This means once current inventory is sold out, it will not be back ordered nor will it be built again. In the rare case where a product is oversold, your order will be canceled and all payments will be refunded The RQ Series requires PART# 300-4145-1ALQFT to seal on a 4500 flange style intake manifold.

Overview

For competitive classes where every last hundredth of a second counts, Race Q-Series carburetors offer excellent performance, consistency, and tunability. Vacuum-drawn die-cast aluminum main bodies eliminate porosity and yield extremely precise tolerances. Scalloped, symmetrical throttle bore openings work in concert with recessed air bleed cavities to minimize flow restrictions, and specially contoured venturi provide a broad operating range. For added versatility, Race Q carbs utilize a dual-pattern billet throttle-body, making them compatible with both 4150- and 4500-style flanges. All Race Q carburetors feature billet metering blocks with five-stage changeable emulsions, as well as, throttle bodies with roller bearing seals to provide smoother operation, less wear on shaft, and longer life. •Race style aluminum main body with upgraded downleg race boosters •Screw-In airbleeds that have been recessed and moved out of the air way for less restriction •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 •4-corner idle •Billet throttle body with roller-bearing 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.

Specs

Barrels4
Billet ColorBlack
BoosterDown Leg
BrandQuick Fuel
CFM650
ChokeNone
Circuit2
Emission Code3
FinishShiny
FuelGasoline
Fuel SystemCarbureted
High Speed Air Bleed33
Idle Air Bleed Size73
MaterialAluminum
ModelRace-Q Series
Primary Main Jet70
Primary Power Valve45
Primary Pump Nozzle Size31
Product TypeCarburetor
SecondariesMechanical
Secondary Main Jet80
Supercharged ApplicationNo
Throttle Bore1-11/16 inch
Part NumberRQ-650

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only 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

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

Tech Resources

This part is limited to stock on hand. This means once current inventory is sold out, it will not be back ordered nor will it be built again. In the rare case where a product is oversold, your order will be canceled and all payments will be refunded The RQ Series requires PART# 300-4145-1ALQFT to seal on a 4500 flange style intake manifold.
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      *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

      Some parts are not legal for use in California or other states with similar regulations.