QFT QUICK FUEL TECHNOLOGIES HOLLEY PERFORMANCE Q-850-E85 Double Pump Carburetor Carb

( Brand: Qft Quick Fuel Technologies Holley Performance ), ( Manufacturer Part Number: Q-850-E85 ), ( Part Type: Pump Carburetor ), ( Oe/oem Part Number: Q-series Carburetor ), ( California Prop 65 Warning: Cancer And Reproductive Harm )

Review QFT QUICK FUEL TECHNOLOGIES HOLLEY PERFORMANCE Double Pump Bbl Carburetor Carb fits E85 850

Introducing the QFT Fuel Holley Performance Q-850-E85 E85 850 Double Pump Carburetor, a high-performance solution for your ethanol-fueled engine. This carburetor is specifically designed to provide optimal fuel delivery for E85 ethanol fuel, making it an excellent choice for hot rods, muscle cars, and other high-performance applications.

The Q-850-E85 is a double-pump design, meaning it features two fuel pumps to ensure consistent fuel delivery under all conditions. The primary pump is responsible for supplying fuel under normal operating conditions, while the secondary pump kicks in during high-demand situations, such as wide-open throttle or hard acceleration. This redundancy ensures that your engine always receives the fuel it needs to perform at its best.

This carburetor is constructed from high-quality materials, including a billet aluminum body and stainless steel components. The housing is CNC-machined for precision and features a polished finish that looks great under the hood. The fuel bowls are also vented to prevent fuel from entering the engine during deceleration, improving both performance and emissions.

The Q-850-E85 is equipped with a number of performance-enhancing features. It includes a 550 CFM double-pumper vacuum secondary, which provides additional fuel for improved power and torque. The carburetor also features a power valve, which helps to improve idle stability and reduce emissions.

The carburetor is easy to install and can be calibrated for a wide range of applications using the included jet kit. The kit includes a variety of jets to allow for fine-tuning of the fuel mixture, ensuring optimal performance for your specific engine configuration.

In summary, the QFT Fuel Holley Performance Q-850-E85 E85 850 Double Pump Carburetor is a high-performance, ethanol-compatible carburetor that is perfect for powering your hot rod or muscle car. With its robust double-pump design, high-quality construction, and tunable jet kit, this carburetor is sure to provide reliable, consistent fuel delivery and help you take your performance vehicle to the next level.

The Holley Q-Fuel System with part number Q-850-E85 is a high-performance E85 fuel-specific carburetor designed for ethanol-fueled engines. This double-pump carburetor offers several advantages and disadvantages for enthusiasts and racers.

1. E85 Compatibility: The primary advantage of the Holley Q-F850-E85 carburetor is its compatibility with E85 fuel, which is becoming increasingly popular as a high-performance and environmentally friendly alternative to gasoline.

2. Double Pump Design: The double-pump design ensures reliable fuel delivery, even under high engine vacuum and boost conditions. Each pump is dedicated to supplying fuel to the primary and secondary circuits, ensuring consistent fuel pressure and delivery.

3. Adjustable Features: The Q-F850-E85 carburetor comes with various adjustable features, including the ability to fine-tune the idling mixture, main jet sizes, and secondary needle positions. This allows users to optimize the carburetor for their specific engine and fuel conditions.

4. High-Performance Design: The Holley Q-Fuel System is designed to provide maximum power and efficiency for high-performance applications. The carburetor's design includes features like high-velocity ports, large fuel bowls, and improved metering capabilities to help maximize engine performance.

1. Complexity: The Holley Q-Fuel System is a complex carburetor design, which may require more time and expertise to install and tune correctly. Users should be prepared for the learning curve associated with setting up and fine-tuning the carburetor.

2. Cost: The Q-F850-E85 carburetor is a premium product, and its cost may be a significant investment for some enthusiasts. The price tag includes not only the carburetor itself but also the necessary accessories and tools for installation and tuning.

3. Requires Precision: E85 fuel is more volatile and sensitive to fuel delivery and mixture settings than gasoline. As a result, tuning the Holley Q-Fuel System may require more precise adjustments and a higher level of expertise to achieve optimal performance.

The Holley Q-Fuel System with part number Q-850-E85 is a high-performance carburetor specifically designed for ethanol-fueled engines. Its advantages include E85 compatibility, reliable fuel delivery, adjustable features, and high-performance design. However, its disadvantages include complexity, cost, and the need for precision tuning.

If you are an enthusiast or racer looking to maximize the performance of your E85-fueled engine, the Holley Q-Fuel System with part number Q-850-E85 is an excellent investment. However, be prepared for the learning curve associated with installation and tuning, and ensure you have the necessary expertise and resources to optimize the carburetor for your specific engine and fuel conditions.

Details:

Used Holley QFT Quick Fuel 850 double pumper carburetor with850 flowed Proforma main body with adjustable air bleeds early Fuel Technologies P/N Q-850-E85 Q-Series Carburetor nice physical condition was Enif 2 carbs on a dual quad set-up - inside looks very clean no corrosion as shown 4 corner idle Body would be Quick Fuel billet metering blocks and phenol floats throttle blades measure 1.75 currently jetted at 102/103 may need to tuned to your engine.

part #: q850e85 prices

• $1399.95-$1481.10

specifications carbcoon:

• for models: E85, 850
• brand: Qft Quick Fuel Technologies Holley Performance
• mpn: Q-850-e85
• part type: Pump Carburetor
• oe/oem part number: Q-series Carburetor
• california prop 65 warning: Cancer And Reproductive Harm

offer carbcoon:

• best offers: True
• quantity: 1
• started: July 14, 2025
• options: Ship-to-home
• sold: 0
• availability: In Stock

seller carbcoon:

• city: Waldo, Wisconsin
• # reviews: 17391
• rating: 100.0%

shipping carbcoon:

• carrier: UPS, USPS
• service: UPS Ground, USPS Priority Mail
• cost: $28.55
• class: Standard, Expedited
• transit: 3-8 Days
• type: Calculated

general carbcoon:

• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors
• condition: Used

payments carbcoon:

• other
• wallet: Apple-pay
• credit card: Mastercard

returns carbcoon:

• policy: No Returns

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