HOLLEY 2BMB4777 Carburetor Body Cfm Double Pumper Racing 4150 4-BARREL

( Brand: Holley ), ( Type: Milled Choke Tower ), ( Manufacturer Part Number: 2BMB4777 )

Review HOLLEY 4150 4-barrel 2b 4777 Carburetor Main Body Cfm Double Pumper Racing fits 650

The Holley 2BMB4777 4150 4-barrel carburetor body is a high-performance racing carburetor designed for applications requiring increased airflow and fuel delivery. This carburetor body is part number 2B 4777 in Holley's 2-barrel Quad Avenger series, and it is rated for an impressive 650 CFM (cubic feet per minute) airflow.

This double pumper racing carburetor features a 4150 series base plate, which is compatible with a wide range of intake manifolds and throttle bodies. The body is crafted from high-quality aluminum, ensuring durability and resistance to corrosion. The quad avenger design offers excellent vacuum secondary operation, providing smooth and consistent engine idle and throttle response.

The Holley 2BMB4777 4150 carburetor body comes equipped with a unique double pumper system, which allows for increased fuel pressure and improved atomization. This results in more complete combustion, leading to increased horsepower and torque. The body also includes Holley's patented Accu-Mizer fuel metering system, which ensures precise fuel delivery for optimal engine performance.

Additionally, this carburetor body is designed to accommodate a wide range of fuel systems, including both gasoline and methanol applications. It includes a fuel bowl gasket and a float bowl venturi plate, which can be easily swapped out to accommodate different fuel systems. The body also includes a removable float bowl, making it easier to access for maintenance and adjustments.

The Holley 2BMB4777 4150 4-barrel carburetor body is an excellent choice for high-performance racing applications, offering increased airflow, fuel delivery, and vacuum secondary operation. Its durable aluminum construction, double pumper system, and compatibility with various fuel systems make it a versatile and powerful option for racers and enthusiasts alike.

The Holley 2bmb4777 4150 4-barrel 2b carburetor body is a popular choice among racing enthusiasts due to its high flow rate and ability to provide consistent fuel delivery in high-performance applications. However, like any product, it comes with its pros and cons.

1. High flow rate: With a flow rate of 650 CFM, this carburetor is ideal for high-performance applications where increased fuel delivery is necessary.

2. Double pumper design: The double pumper design allows for better vacuum secondaries activation, resulting in improved power and torque.

3. Adjustability: Holley carburetors are known for their adjustability, allowing users to fine-tune the fuel mixture for optimal performance.

4. Durability: Holley carburetors are built to last, with high-quality materials and robust construction.

1. Complexity: The double pumper design and adjustability features make this carburetor more complex to install and tune compared to single-barrel or simpler 4-barrel designs.

2. Cost: The Holley 2bmb4777 4150 4-barrel carburetor is more expensive than some other options on the market.

3. Requires expertise: Installing and tuning this carburetor requires a good understanding of carburetion and high-performance engines.

In conclusion, the Holley 2bmb4777 4150 4-barrel carburetor is a high-performance option suitable for racing applications. Its pros, such as the high flow rate, double pumper design, adjustability, and durability, outweigh the cons, which include complexity, cost, and the need for expertise.

If you have the necessary knowledge and resources to install and tune this carburetor, it can provide significant performance benefits for your racing application. However, if you are new to high-performance carburetion, you may want to consider a simpler option or seek professional assistance.

part # 2bmb4777 prices

• $52.50-$273.95

specifications carbcaddie:

• for models: 650
• brand: Holley
• type: Milled Choke Tower
• manufacturer part number: 2BMB4777

offer carbcaddie:

• sold: 0
• availability: In Stock
• started: December 22, 2025
• quantity: 1
• best offers: True
• options: Ship-to-home

general carbcaddie:

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

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• policy: Returns Accepted

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