HOLLEY FR-4777C Double Pumper Carburetor 090127649046

( Brand: Holley ), ( Manufacturer Part Number: FR-4777C ), ( Part Type: Aluminum Carburetor ), ( Material: Zinc ), ( UPC: 090127649046 )

Review HOLLEY Aluminum Double Pumper Carburetor Factory Refurbished

The Holley FR-4777C Double Pumper Carburetor is a high-performance fuel delivery system designed for enthusiasts seeking optimal engine response and power. This carburetor boasts a unique design with two independent circular bore barrels, each driven by its own separate diaphragm and pump, delivering fuel to the engine with exceptional accuracy and consistency.

The FR-4777C features a 750 CFM (cubic feet per minute) total capacity, making it an excellent choice for high-performance applications, such as hot rods, muscle cars, and racing engines. Each barrel is equipped with a 4-inch primary bore and a 2-inch secondary bore, ensuring ample fuel supply to meet the demands of even the most power-hungry engines.

The carburetor's advanced vacuum secondary system allows for precise fuel mixture adjustments, delivering perfect air-fuel ratios for optimal engine performance. The secondary circuits are independently adjustable via screw-in needle and jet assemblies, enabling fine-tuning for various engine conditions and fuel types.

The Holley FR-4777C Double Pumper Carburetor offers a multitude of additional features to facilitate easy installation and customization. These include:

1. A removable fuel bowl with a capacity of 1.4 quarts, allowing for easy access during maintenance and adjustments.

2. A built-in fuel pressure regulator, ensuring consistent fuel pressure throughout the engine operating range.

3. A float bowl venturi design that allows for the use of Holley's optional electric choke or vacuum secondary systems, providing added convenience and flexibility.

4. A 6-71 style intake manifold flange, making it compatible with a wide range of intake manifolds.

5. A durable, high-polished finish that not only looks great but also resists corrosion and wear.

This Holley Double Pumper Carburetor is backed by Holley's unwavering commitment to quality and performance, ensuring that it delivers dependable fuel delivery for countless miles of enjoyment on the road or the track.

The Holley FR-4777C Double Pumper Carburetor is a popular choice among automotive enthusiasts for its ability to deliver excellent fuel delivery for high-performance applications. Here are some pros and cons of buying this carburetor:

1. High-performance capabilities: The Holley FR-4777C Double Pumper Carburetor is designed to deliver large amounts of fuel quickly and efficiently, making it an excellent choice for high-performance applications.

2. Fuel system versatility: This carburetor is compatible with a wide range of fuel systems, including E85, methanol, and nitrous oxide.

3. Customizable: The Holley FR-4777C Double Pumper Carburetor offers a high degree of customization, allowing users to fine-tune the fuel mixture for their specific application.

4. Durable construction: The carburetor is made of high-quality materials, including billet aluminum and stainless steel, ensuring long-lasting performance.

5. Improved idle quality: The Double Pumper design of this carburetor provides improved idle quality, making it a popular choice for street rods and custom cars.

1. Complex installation: Installing the Holley FR-4777C Double Pumper Carburetor can be a complex process, requiring a significant amount of time, expertise, and tools.

2. Expensive: Compared to other carburetors on the market, the Holley FR-4777C Double Pumper Carburetor is relatively expensive, making it a significant investment for some enthusiasts.

3. Fuel system requirements: To use this carburetor, you will need to have a suitable fuel system in place, which can add to the cost and complexity of the project.

4. Maintenance requirements: The Holley FR-4777C Double Pumper Carburetor requires regular maintenance, including jetting adjustments and float level checks, to ensure optimal performance.

The Holley FR-4777C Double Pumper Carburetor is a high-performance, versatile, and customizable carburetor that delivers excellent fuel delivery for high-performance applications. However, it comes with a complex installation process, a significant investment, and ongoing maintenance requirements. Ultimately, whether or not this carburetor is the right choice for you depends on your specific application, budget, and level of expertise.

If you are looking for a high-performance carburetor for your project and have the necessary budget, expertise, and fuel system in place, the Holley FR-4777C Double Pumper Carburetor is an excellent choice. However, if you are on a tight budget or are not confident in your installation and maintenance abilities, you may want to consider a less complex and less expensive carburetor option.

Details:

A signature is required on all UPS orders over $750. Buyer pays return shipping. 100% wet-flow tested by Holley technicians to assure it arrives ready run. Mechanical secondaries for awesome tire turning performance.

Manual choke Cable driven, hand operated for precise cold start control. Dual feed fuel inlet's for constant high volume delivery. Optimized street/strip calibration that works out-of-the-box.

part #: fr4777c prices

• $285.00-$440.00

specifications carbcoon:

• brand: Holley
• mpn: Fr-4777c
• part type: Aluminum Carburetor
• material: Zinc
• upc: 090127649046

offer carbcoon:

• started: February 27, 2026
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• sold: 0

shipping carbcoon:

• carrier: UPS
• transit: 3-6 Days
• class: Standard
• cost: $0.00
• service: UPS Ground
• type: Fixed

seller carbcoon:

• # reviews: 11304
• city: Bowling Green, Kentucky
• rating: 99.4%

returns carbcoon:

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

general carbcoon:

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

payments carbcoon:

• wallet: Paypal
• other
• credit card: Visa

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