HOLLEY 2B4778 Carburetor Body Blocks Cfm Double Pumper 4150 4-BARREL

( Brand: Holley ), ( Type: Racing Flowed Body Metering ), ( Manufacturer Part Number: 2B4778 ), ( Country Of Origin: United States )

Review HOLLEY 4150 4-barrel 4778 Carburetor Main Body And Blocks Cfm Double Pumper fits 700

The Holley 2B4778 4150 4-barrel carburetor body is a high-performance automotive component designed for applications requiring large airflow rates. This particular model is identified by its part number 2B4778 and is a double pumper configuration, capable of delivering an impressive airflow volume of 700 cubic feet per minute (CFM).

This Holley carburetor body is engineered with a 4150 series base, which is a popular choice among automotive enthusiasts for its versatility and reliability. The base comes with a cast-aluminum construction, ensuring durability and resistance to heat. The body is designed to accommodate four-barrel carburetor configurations, allowing for optimal fuel delivery and airflow for high-performance engines.

The 700 CFM double pumper configuration is ideal for larger engines, such as those found in muscle cars, hot rods, and racing applications. The double pumper design features two separate pumps, each with its own set of vacuum secondary circuits, ensuring consistent fuel delivery under various engine load conditions. The double pumper configuration also allows for finer fuel pressure adjustments, providing better tuning capabilities for optimal engine performance.

The Holley 2B4778 4150 4-barrel carburetor body is designed with a number of features to facilitate easy installation and tuning. The body includes a weld-in flange, allowing for a secure installation process. The body also comes with a built-in fuel pressure regulator, making it easier to set and maintain the correct fuel pressure for optimal engine performance. The body is also compatible with various Holley fuel systems, such as the Electric Fuel Pressure Regulator (EFIR) and the Holley Terminator X EFI system.

Additionally, the body comes with a venturi size of 1.682 inches, making it suitable for applications requiring a larger airflow volume. The body also includes a number of mounting points for accessories, such as fuel pressure gauges and temperature sensors, allowing for easy monitoring and tuning of the carburetor's performance.

In summary, the Holley 2B4778 4150 4-barrel carburetor body is a high-performance component designed for applications requiring large airflow rates. With its 700 CFM double pumper configuration, cast-aluminum construction, and a range of convenient features, this carburetor body is an excellent choice for automotive enthusiasts seeking optimal engine performance in their high-performance engines.

The Holley 2b4778 4150 4-barrel 4778 carburetor body is a high-performance carburetor suitable for applications requiring large CFM intake rates. This carburetor is a double pumper design, which means it utilizes two pumps to deliver fuel to the engine for improved performance. Here are some pros and cons of buying this Holley carburetor:

1. Large CFM intake rate: With a CFM rating of 700, this carburetor is suitable for high-performance applications where large fuel delivery is necessary.

2. Double pumper design: The double pumper design provides more fuel delivery capacity than a single-pumper carburetor, making it ideal for high-performance engines.

3. Customizable: Holley carburetors are known for their customization options, which allow users to fine-tune the carburetor to their specific engine and driving conditions.

4. Durable: Holley carburetors are built to last, with high-quality materials and precision manufacturing.

5. Wide range of applications: This carburetor is suitable for a wide range of applications, from hot rods to race cars.

1. Complexity: Double pumper carburetors are more complex than single-pumper carburetors, which can make installation and tuning more challenging.

2. Cost: The Holley 2b4778 4150 4-barrel 4778 carburetor body is a high-performance carburetor, and as such, it comes with a higher price tag than some other options.

3. Requires expertise: Installing and tuning a high-performance carburetor like this one requires a certain level of expertise. If you're not comfortable working on your engine or don't have access to experienced help, it may be worth considering a less complex option.

4. Fuel consumption: A high-performance carburetor like this one can consume more fuel than a stock or moderately-modified engine, which can lead to increased fuel costs.

In conclusion, the Holley 2b4778 4150 4-barrel 4778 carburetor body is a high-performance option suitable for applications where large fuel delivery is necessary. Its double pumper design, customizability, and durability make it an attractive choice for many enthusiasts. However, its complexity, cost, and fuel consumption requirements should be carefully considered before making a purchase.

Recommendation: If you're looking for a high-performance carburetor and have the expertise and resources to install and tune it, the Holley 2b4778 4150 4-barrel 4778 carburetor body is an excellent choice. However, if you're looking for a more cost-effective or less complex option, there are other carburetor designs and manufacturers that may be more suitable for your needs. Ultimately, it's important to carefully consider your engine requirements, budget, and expertise before making a purchase.

part # 2b4778 price

• $115.00

specifications carbcaddie:

• for models: 700
• brand: Holley
• type: Racing Flowed Body Metering
• manufacturer part number: 2B4778
• country of origin: United States

general carbcaddie:

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

returns carbcaddie:

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

payments carbcaddie:

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

offer carbcaddie:

• options: Ship-to-home
• started: May 4, 2026
• sold: 0
• quantity: 1
• availability: In Stock
• best offers: True

shipping carbcaddie:

• class: Standard
• transit: 3-8 Days
• service: USPS Ground Advantage
• cost: $0.00
• type: Calculated
• carrier: USPS

seller carbcaddie:

• # reviews: 34395
• rating: 100.0%

Holley 2B4778 Is Similar To:

• Ford D0of-9510-n 1970 Cobra Jet 429 Scj Manual 4 Speed Holley Carburetor List 4627 As Is (27.6% similar) $223.99–$2672.99. (August 23rd, 2024)
• Holley 12r-5204b Carburetor Throttle Base Plate #0559 (38.8% similar) $30.00–$59.99. (August 23rd, 2024)
• Holley 12r-4251b Carburetor Throttle Base Plate #0574 (38.8% similar) $24.95–$57.88. (August 23rd, 2024)
• Holley 3887686 2 Bbl 500 Cfm Marine Carburetor Volvo Penta 4.3l For Parts Or Rebuild (37.6% similar) $159.99–$299.95. (August 23rd, 2024)
• Holley 12r-4507b 650-800 Dp Double Pumper Base Plate Baseplate 4160 4779 4777 4778 4780 (34.7% similar) $75.00–$128.99. (August 24th, 2024)
• Holley 36-181 Carburetor Metering Jet 2 Of Each Size Contact Prior Ordering (31.1% similar) $94.99–$99.89. (August 24th, 2024)
• Holley 8485-1947 Primary Front Metering Block 18502 600 Vacuum Secondary Carburetor (29.6% similar) $49.99–$200.00. (August 24th, 2024)
• Holley 37-119 Model 4160 4 Barrel 600 Cfm Carb Rebuild Kit (38.9% similar) $28.99–$48.99. (August 25th, 2024)
• Holley 37-1536 Carburetor Renew Kit 4160 (38.1% similar) $170.95. (August 25th, 2024)
• Holley 45225 45-225 Manual Choke Conversion Kit Fit All Models 2300 4150 And 4160 (22.8% similar) $57.35–$76.89. (August 25th, 2024)
• Holley 80457-2 List Carburetor 600cfm 4bbl 4160 Main Body Only With New Gasket (48.8% similar) $8.35–$11.15. (August 26th, 2024)