HOLLEY FR-4778C Cfm Double Pumper Carburetor

( Brand: Holley ), ( Manufacturer Part Number: FR-4778C ), ( Type: Carburetor ), ( Manufacturer Warranty: No Warranty ), ( Country Of Origin: United States )

Review HOLLEY Cfm Double Pumper Carburetor Factory Refurbished By fits 700

The Holley FR-4778C 700 CFM Double Pumper Carburetor is a high-performance fuel delivery system designed for serious hot rodders and enthusiasts seeking improved engine performance. This carburetor is part of Holley's Classic Series, which blends traditional style with modern technology to provide a superior fuel system for vintage and modern muscle cars.

The FR-4778C is a 700 CFM double pumper carburetor, which means it utilizes two vacuum pumps for enhanced fuel delivery. This design ensures a consistent fuel mixture under varying engine loads and conditions, resulting in improved engine performance, throttle response, and fuel efficiency. The double pumper configuration is particularly beneficial for high-compression engines, turbocharged engines, or high-performance applications that require additional fuel flow.

The carburetor features a 750 CFM primary and 250 CFM secondary venturi, providing a generous fuel-air mixture to support a wide range of engine sizes and power levels. The double pumper design includes a 1-3/4-inch primary and 1-1/2-inch secondary fuel bowls, ensuring ample fuel volume for optimal performance. The FR-4778C also includes Holley's proven Ultra-Glo bowl-venturi design, which helps maintain a consistent fuel-air mixture by reducing vapor lock and promoting proper atomization.

The Holley FR-4778C features a classic design with a polished aluminum body, chrome accelerator pump, and a black-anodized float bowl. The carburetor includes a 1-3/4-inch primary throttle bore and a 1-1/2-inch secondary throttle bore, which contribute to smooth throttle response and power delivery. The double pumper design includes a progressive linkage, which provides precise throttle control and eliminates the need for additional linkage adjustments.

The FR-4778C includes a 60-pound fuel pump, which is capable of delivering sufficient fuel flow to support the carburetor's capabilities. The fuel pump is easily accessible for maintenance, and the carburetor includes a fuel pump mounting bracket for easy installation. The carburetor also includes a 3/8-inch fuel inlet and a 3/8-inch fuel outlet, making it compatible with a wide range of fuel systems and custom applications.

The Holley FR-4778C 700 CFM Double Pumper Carburetor is built to last and designed for easy installation. The carburetor includes a 1-3/4-inch vacuum port and a 1-3/4-inch mechanical fuel pump port, which can be easily connected to the vehicle's fuel and vacuum systems. The carburetor also includes a primary and secondary idle jet, as well as a primary and secondary accelerator pump jet, which can be easily adjusted for optimal performance.

In conclusion, the Holley FR-4778C 700 CFM Double Pumper Carburetor is a high-performance fuel delivery system that combines classic design with modern technology. The double pumper design ensures consistent fuel delivery, while the generous venturi sizes provide ample fuel-air mixture for improved engine performance and throttle response. The carburetor features a polished aluminum body, chrome accelerator pump, and black-anodized float bowl, making it a stylish addition to any hot rod or muscle car. With its durable construction, easy installation, and adjustable components, the Holley FR-4778C is a reliable choice for serious performance enthusiasts.

1. High Air Flow: The Holley FR-4778C carburetor has a high air flow rate of 700 CFM, which is suitable for high performance engines.

2. Double Pumper: The double pumper design allows for better fuel flow, which can improve engine performance and fuel efficiency.

3. Adjustable Main Jet: The main jet is adjustable, which allows for fine-tuning of the carburetor to match the specific engine and fuel settings.

4. Vacuum Secondary: The vacuum secondary system helps to ensure proper fuel delivery at high RPMs, which can improve engine performance.

5. Durable Construction: The Holley FR-4778C carburetor is made with high-quality materials, including a cast aluminum base and stainless steel components, which can withstand the harsh conditions of high performance driving.

1. Complex Installation: The double pumper design and adjustable components can make installation more complex than a simpler carburetor, which may require additional time and expertise.

2. Potential for Leaks: The multiple components and adjustable parts of the Holley FR-4778C carburetor can potentially lead to leaks, which may require regular maintenance and repair.

3. Expensive: The Holley FR-4778C carburetor is more expensive than some other carburetor options, which may be a consideration for budget-conscious buyers.

The Holley FR-4778C 700 CFM Double Pumper Carburetor is a high-performance carburetor option that can improve engine performance and fuel efficiency. However, it is more complex to install and maintain than some other carburetor options, and it is also more expensive. If you are looking for a carburetor that can handle high performance engines and fine-tune your engine's fuel delivery, then the Holley FR-4778C may be a good choice for you. However, if you are looking for a more budget-friendly option or are not comfortable with the complex installation and maintenance requirements, then you may want to consider other carburetor options.

If you are looking for a high-performance carburetor that can handle high RPMs and improve engine performance, then the Holley FR-4778C 700 CFM Double Pumper Carburetor is a good choice. However, be prepared for a more complex installation and maintenance process, and be prepared to pay a higher price. If you are not comfortable with these requirements, then you may want to consider other carburetor options that have simpler installation and maintenance requirements.

Details:

This is a factory refurbished carburetor that was by Holly.

part #: fr4778c prices

• $166.08-$782.99

specifications carbcoon:

• for models: 700
• brand: Holley
• mpn: Fr-4778c
• type: Carburetor
• manufacturer warranty: No Warranty
• country of origin: United States

shipping carbcoon:

• transit: 6-11 Days
• cost: $0.00
• type: Calculated
• carrier: USPS
• service: USPS Priority Mail
• class: Expedited

returns carbcoon:

• policy: No Returns

offer carbcoon:

• best offers: True
• sold: 0
• quantity: 1
• started: August 3, 2024
• availability: In Stock
• options: Ship-to-home

general carbcoon:

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

seller carbcoon:

• rating: 99.2%
• city: Hartford, Kentucky
• # reviews: 6818

payments carbcoon:

• credit card: American-express
• wallet: Apple-pay
• other

Holley FR-4778C Is Similar To:

• Holley 4557 Ls6 L78 396 454 Carburetor 3967477-gg 1970 Chevelle Camaro Nova (39.7% similar) She was removed off of a running BBC motor but has been sitting for few months. It has not been tested and could possibly need work, labor, other parts/materials before use. May be shipped via ups, USPS or FedEx. The base plate was replaced. Selling an oem Holley list 4557 carburetor with...(May 17th, 2024)
• Holley 10741 Teapot 4000 4-barrel Carburetor 1074-1 Core 1955 Ford Thunderbird 292 V-8 (44.6% similar) Ford part number EYCK-9510-T. Holley teapot 4000 4-BARREL carburetor, list number 1074-1. Please verify part number and pictures match your application. Linkage moves free. See pics for condition. Carb core appears to be mostly complete. Core for rebuilding or parts...(May 17th, 2024)
• Holley 1920 Vintage Glass Bowl Carburetor Hot Rod Gasser Carb Core Rebuild (44.1% similar) Good condition all linkage moves as it should great for rebuild...(May 17th, 2024)
• Holley Fr-80457s 0-80457s 600cfm Street Warrior Electric Choke Factory (42.6% similar) Part #: Holley FR-80457S for sale...(May 17th, 2024)
• Holley 80531 Front Primary Center Hung Fuel Bowl Cathedral Dp Double Pumper Vac Sec (40.3% similar) Shipping is expensive no matter who the carrier and please understand this. This will need a good cleaning before use. For your consideration today is a used Holley front primary hung fuel bowl cathedral DP double pumper vac sec. It includes everything that is in the pictures!, my...(May 17th, 2024)
• Holley 06425c Two Barrel 650cfm Carburetor 6425 Imca Cheater Outlaw Racing Core (38.7% similar) Rare Holley two barrel carburetor, list number 6425 - carb is together with choke removed but horn intact metering block also in very nice physical condition, all linkage moves freely kick down arm as well good overall core condition has been sitting fryers it should base and bores look...(May 17th, 2024)
• Holley Ecz-9510-m Teapot 4000 4-barrel Carburetor 1161-2 Carb 1956 Ford Thunderbird 312 V-8 (44.4% similar) Carb core appears to be mostly complete. Core for rebuilding or parts. Holley teapot 4000 4-BARREL carburetor, list number 1161-2. Please verify part number and pictures match your application. See pics for condition. Ford part number CZ-9510-M. Linkage moves free...(May 18th, 2024)
• Holley R3310-1 Carburetor List-3310-1 780cfm H4-4150 4bbl Carb Ford Chevy Bop Mopar (32.5% similar) Used Holley 780 cfm 4BBL carburetor. Being sold for parts, restoration, core, rebuild. Looks to be complete, no cracks, being sold as/is. LIST-3310-1, date, 0653...(May 18th, 2024)
• Holley 1850-3 Carburetor 4 Barrel 600 Cfm Vac Secondary Nice Rebuildable Core (44.6% similar) Many of the carbs have been rebuilt and were sitting in plastic bags, but I no history on what was done to them. It is missing a part of the electric choke. Very nice and clean vintage. Spectre fuel system accessory carburetor. The rest of it looks complete. 600 cfm vac...(May 19th, 2024)
• Holley 4360 Economaster 450 Cfm Carburetor 7454 Quadrajet Replacement Chevrolet (44% similar) List number is 7454. For sale is one 1 used Holley 4360 series 450 cfm spread bore carburetor. Verify it will fit your application prior to purchasing. Please look closely at all the pictures for condition and details. The carb is in poor shape and for parts only...(May 19th, 2024)
• Holley List-7001 4165 Spreadbore Carburetor 650cfm Core Or Parts (46.7% similar) This model is a spread bore design double pumper with two accelerator pumps. You are buying on a Holley model 4165 four-barrel carburetor, stamped p/n # LIST-7001, date code 1610, rated at 650 cfm ...(May 19th, 2024)