SS-Series Carburetor Black Diamond, 850CFM


PART# BD-850

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Super Street Series carburetors combine street-friendly drivability and track-capable performance in a single value-oriented package. Setting them apart from ordinary street carbs, they feature billet dual metering blocks and throttle-bodies that offer tighter tolerances and eliminate porosity. Not only are Super Street Series carbs available with both vacuum or mechanical secondaries, QFT™ also offers models designed and calibrated specifically for E85 fuel and blow-through forced induction applications. Running alternative fuel or boost no longer requires an expensive custom carburetor. All SS-Series carburetors are equipped with universal throttle levers to accommodate Ford A/T kickdown, GM 700 R4 mounting holes, and ability to mount brackets for Chrysler vehicles. Available in 8 different sizes, bolting on the ultimate street/strip carburetor has never been easier. Even a carburetor that performs great can still be an eyesore, but it doesn't have to be that way. Quick Fuel Technology's proprietary Black Diamond® coating offers excellent corrosion resistance as well as a durable finish that easily stands up to dirt and oil. In addition to great looks, the PTFE coating reduces fuel temperature by six percent for improved performance.


Billet ColorBlack
BoosterDown Leg
BrandQuick Fuel
Emission Code3
Fuel SystemCarbureted
High Speed Air Bleed28
Idle Air Bleed Size70
Primary Main Jet80
Primary Power Valve65
Primary Pump Nozzle Size35
Product TypeCarburetor
Secondary Main Jet86
Supercharged ApplicationNo
Throttle Bore1-3/4 inch
Part NumberBD-850


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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