HOLLEY 82851-1 Double Pumper Carburetor Barrel CARBURETOR/4 Barrel/list

( Brand: Holley ), ( Manufacturer Part Number: 82851-1 ), ( Type: Carburetor )

Review HOLLEY Double Pumper Carburetor/4 Barrel/list fits 850

The Holley 82851-1 Double Pumper 850 CFM Carburetor is a high-performance, 4-barrel solution for automotive enthusiasts seeking to enhance the fuel delivery system of their classic or modern muscle cars. This carburetor is part of Holley's renowned Ultra series, which is known for its advanced features and exceptional power potential.

This Double Pumper 850 CFM carburetor boasts an impressive fuel capacity, capable of delivering 850 cubic feet per minute (CFM) of air and fuel mixture to the engine. It is designed with two independent fuel pumps that are capable of providing ample fuel pressure to each barrel, ensuring consistent and reliable fuel delivery. The result is a powerful and responsive engine that delivers optimal performance across the RPM range.

The 82851-1 Double Pumper 850 CFM Carburetor features Holley's innovative Ultra Lite Six-Stack Design, which reduces weight by eliminating the need for heavy, traditional float bowls. Instead, this carburetor utilizes six, lightweight, and precise fuel bowls that are mounted directly onto the fuel pump, significantly reducing weight and improving throttle response.

Another notable feature of this carburetor is the integrated electrical system, which includes a built-in electric choke and an electric accelerator pump. These features make it easier to start the engine in cold conditions and provide smooth and consistent power during acceleration, respectively. Additionally, the electric choke can be easily adjusted using a simple dial on the side of the carburetor.

The 82851-1 Double Pumper 850 CFM Carburetor also comes with adjustable secondary metering rods, allowing users to fine-tune the fuel mixture to their specific engine and driving conditions. Furthermore, it includes Holley's popular HP Series secondary venturi, which is designed to provide better fuel atomization and more efficient combustion.

This carburetor is suitable for use with various fuel systems, including gasoline and E85 ethanol. It also comes with a detailed installation manual, ensuring that the installation process is as straightforward and hassle-free as possible.

In summary, the Holley 82851-1 Double Pumper 850 CFM Carburetor is a high-performance, 4-barrel solution that delivers impressive fuel capacity, advanced features, and exceptional power potential. Its innovative design, integrated electrical system, and adjustable fuel mixture make it an excellent choice for automotive enthusiasts seeking to upgrade their fuel delivery system and take their muscle car to the next level.

The Holley 82851-1 850 CFM Double Pumper 4-Barrel Carburetor is a popular choice among hot rod and performance car enthusiasts. This carburetor offers several advantages and disadvantages that are important to consider before making a purchase.

1. High Flow Rate: The Holley 850 Double Pumper Carburetor delivers a high airflow rate, which is essential for high-performance engines. This makes it suitable for applications where the engine requires a large amount of fuel and air mixture for optimal performance.

2. Fuel Efficiency: Despite its high flow rate, the Holley 850 Double Pumper Carburetor is known for its fuel efficiency. It utilizes a vacuum secondary circuit that improves fuel atomization and enhances combustion efficiency, resulting in better fuel economy.

3. Customizability: Holley carburetors are renowned for their customizability. The 850 Double Pumper Carburetor comes with adjustable jet sizes, emulsion tubes, and primary and secondary needle positions. This allows users to fine-tune the carburetor to their specific engine requirements.

4. Durability: Holley carburetors are built to last. The 850 Double Pumper Carburetor features heavy-duty components, including a billet aluminum base, brass fuel bowls, and stainless steel float levels.

1. Complexity: The Holley 850 Double Pumper Carburetor is a complex piece of machinery. Installing and tuning it can be a challenging process, especially for those without extensive experience.

2. Cost: Compared to some other carburetor options, the Holley 850 Double Pumper Carburetor is relatively expensive. The cost of the carburetor, along with the potential additional cost of tuning and installation, may be a significant barrier for some buyers.

3. Vacuum Leaks: Vacuum leaks can be a common issue with double pumper carburetors, including the Holley 850. These leaks can cause a variety of symptoms, including poor engine performance and idling issues.

The Holley 82851-1 850 CFM Double Pumper 4-Barrel Carburetor offers several advantages for high-performance applications, including its high flow rate, fuel efficiency, customizability, and durability. However, it also comes with some disadvantages, such as complexity, cost, and the potential for vacuum leaks. Ultimately, the decision to purchase this carburetor depends on the specific needs and resources of the buyer.

If you are looking for a high-performance carburetor and have the experience and resources to install and tune it, the Holley 850 Double Pumper Carburetor is an excellent choice. However, if you are new to carburetor installation or have a limited budget, you may want to consider other options that are more user-friendly and cost-effective. Additionally, be prepared for the potential challenges of vacuum leaks and the complex tuning process.

Details:

The Holley Double Pumper 850 Carburetor is a high-performance 4-barrel carburetor designed for car and truck engines.

part #: 828511 prices

• $119.69-$151.99

specifications carbcoon:

• for models: 850
• brand: Holley
• mpn: 82851-1
• type: Carburetor

seller carbcoon:

• city: Houston, Texas
• # reviews: 76
• rating: 100.0%

general carbcoon:

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

returns carbcoon:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

offer carbcoon:

• sold: 0
• started: October 25, 2025
• options: Ship-to-home
• quantity: 1
• availability: In Stock

shipping carbcoon:

• service: USPS Ground Advantage
• transit: 5-12 Days
• type: Calculated
• cost: $17.62
• class: Standard
• carrier: USPS

payments carbcoon:

• credit card: Diners-club
• wallet: Google-pay
• other

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