HOLLEY CFB4 Carburetor Carb Secondary Fuel Float Bowl Circle 4-BARREL

( Brand: Holley ), ( Type: Factory Oem ), ( Oe/oem Part Number: 4150 4160 ), ( Manufacturer Part Number: CFB4 )

Review HOLLEY 4-barrel Carburetor Carb Secondary Side Hung Fuel Float Bowl Circle

The Holley CFB4 4-barrel carburetor is a high-performance carburetor designed for applications requiring exceptional fuel delivery and air/fuel ratio control. This carburetor features a secondary fuel system in the form of a circular float bowl, which is located below the primary bowl. This secondary system is designed to provide additional fuel for high RPM and high load situations, ensuring optimal engine performance.

The CFB4 carburetor body is constructed from high-strength aluminum, which not only reduces weight but also provides excellent heat dissipation properties. The primary and secondary float bowls are both vented to prevent cavitation and ensure consistent fuel level. The primary bowl has a capacity of approximately 1.3 quarts, while the secondary bowl holds an additional 0.3 quarts.

The carburetor comes equipped with Holley's Advanced Automatic Transmission Control (AATC) system. This feature allows for precise fuel metering when using an automatic transmission, ensuring smooth shifts and optimal engine performance. The AATC system also includes a built-in throttle position sensor, which provides real-time data to the engine management system for optimal fuel delivery.

The CFB4 carburetor is designed to be easy to tune and adjust. It comes with a removable fuel bowl gasket, which allows for easy access to the primary jet circuits. The secondary jet circuits can be accessed by removing the secondary bowl. The carburetor also includes adjustable secondary jet circles, which can be easily adjusted using the supplied Allen wrench.

The CFB4 carburetor is designed to be a direct replacement for many OEM 4-barrel applications. It comes with a new gasket kit, including a base gasket, primary bowl gasket, and secondary bowl gasket. It also includes new mounting hardware and a new throttle linkage bracket.

In summary, the Holley CFB4 4-barrel carburetor is a high-performance carburetor designed for applications requiring exceptional fuel delivery and air/fuel ratio control. It features a secondary fuel system, is constructed from high-strength aluminum, and comes with Holley's Advanced Automatic Transmission Control system for easy tuning and optimal engine performance.

The Holley CFB-4 4-barrel carburetor is a popular choice among automotive enthusiasts for enhancing the performance of their engines. This carburetor comes with a secondary fuel system featuring a float bowl circle. In this response, we will discuss the pros and cons of buying this specific carburetor model.

1. Improved Performance: The Holley CFB-4 carburetor is known for its ability to deliver excellent fuel distribution and air/fuel mixture, leading to improved engine performance.

2. Adjustability: This carburetor offers a high degree of adjustability, which allows users to fine-tune the fuel mixture for their specific engine and driving conditions.

3. Durability: Holley carburetors are built to last, with high-quality materials and robust construction. The CFB-4 model is no exception, making it a wise investment for those seeking a long-term solution.

4. Fuel Efficiency: The secondary fuel system in the CFB-4 carburetor can help improve fuel efficiency by ensuring that the engine receives the optimal fuel mixture at all times, reducing fuel waste.

5. Wide Compatibility: This carburetor is compatible with a wide range of applications, making it a versatile choice for various engine types and vehicles.

1. Complexity: The Holley CFB-4 carburetor, with its secondary fuel system, is more complex than a standard 4-barrel carburetor. This complexity may require more maintenance and a higher level of expertise to install and tune correctly.

2. Cost: The CFB-4 carburetor is typically more expensive than a standard 4-barrel carburetor due to its advanced features and additional components.

3. Installation: Installing the Holley CFB-4 carburetor may be a more challenging task than a standard 4-barrel setup, as it involves additional fuel lines and connections.

4. Fuel Pressure: Ensuring proper fuel pressure is crucial for the secondary fuel system to function correctly. If not set up correctly, it could lead to inconsistent fuel delivery and poor performance.

The Holley CFB-4 4-barrel carburetor, with its secondary fuel system and float bowl circle, offers several advantages, including improved performance, adjustability, durability, and fuel efficiency. However, it also comes with some drawbacks, such as complexity, cost, installation challenges, and the need for precise fuel pressure settings.

If you're looking to upgrade your engine's performance and are willing to invest in a more complex and expensive carburetor setup, the Holley CFB-4 4-barrel carburetor could be an excellent choice. However, it's essential to consider your expertise level, budget, and the time and resources required for installation and tuning. If you're not comfortable with the complexity of this carburetor or don't have the necessary resources, a standard 4-barrel carburetor might be a more suitable option.

part # cfb4 prices

• $14.95-$45.00

specifications carbcaddie:

• brand: Holley
• type: Factory Oem
• oe/oem part number: 4150 4160
• manufacturer part number: CFB4

general carbcaddie:

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

seller carbcaddie:

• # reviews: 33035
• rating: 100.0%

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returns carbcaddie:

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

shipping carbcaddie:

• class: Standard
• carrier: USPS
• type: Calculated
• cost: $0.00
• service: USPS Ground Advantage
• transit: 4-10 Days

offer carbcaddie:

• best offers: True
• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: January 31, 2026
• quantity: 1

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