HOLLEY L-4778 Cfm Double Pumper Carburetor Manual Choke Rod Carb

( Brand: Holley ), ( Manufacturer Part Number: L-4778 ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Mounting Flange Type: Square Bore ), ( Material: Aluminum ), ( Universal Fitment: Yes ), ( Country Of Origin: United States )

Review HOLLEY L4778 Cfm Double Pumper Carburetor Manual Choke Hot Rod Carb Bbl fits 700

The Holley L-4778 is a 700 CFM Double Pumper Carburetor designed for manual choke applications. This carburetor is a part of Holley's Performance Series line, which is known for delivering reliable and consistent performance.

The L-4778 is a dual-feed, four-barrel carburetor, meaning it has two separate circuits for each barrel to ensure optimal fuel delivery. The carburetor features Holley's proven Accu-Jet secondary metering system, which provides precise fuel delivery for optimal idle and cruising performance.

The manual choke rod design allows for easy starting in cold weather conditions. The choke rod is located on the left side of the carburetor, making it easily accessible for the driver. The choke rod operates by pulling it out, which opens the choke plates, allowing more fuel to be delivered to the engine for easier starting.

The L-4778 is designed to fit most small-block Chevrolet applications, making it a popular choice for hot rods and performance builds. It comes with a 650 CFM primary jet kit and a 700 CFM secondary jet kit, allowing for easy tuning to specific engine requirements.

The carburetor is constructed from high-quality materials, including a billet aluminum base and fuel bowls, and brass fuel lines. It also features adjustable idle mixture screws, allowing for fine-tuning of the idle mixture for optimal performance.

The L-4778 is easy to install, with a simple, bolt-on design. It comes with all necessary hardware for installation, including mounting brackets and gaskets. The carburetor also features a built-in air bleeder system, making it easy to eliminate air bubbles from the fuel system during installation.

In summary, the Holley L-4778 is a high-performance, manual choke, 700 CFM Double Pumper Carburetor designed for small-block Chevrolet applications. It features precise fuel delivery, easy starting in cold weather, and is easy to install with all necessary hardware included. Whether you're building a hot rod or looking to improve the performance of your daily driver, the L-4778 is an excellent choice.

The Holley L-4778, also known as the 700 CFM Double Pumper Carburetor with manual choke, is a popular choice among automotive enthusiasts for its high performance and versatility. However, like any automotive component, it comes with its own set of pros and cons.

1. High Air Flow: The Holley L-4778 offers a substantial air flow of 700 CFM, making it suitable for high-performance applications.

2. Manual Choke: The manual choke system provides greater control over the starting process, especially in cold weather conditions.

3. Double Pumper Design: The double pumper design ensures consistent fuel delivery, improving engine performance and drivability.

4. Versatility: The Holley L-4778 is compatible with a wide range of fuel systems and can be adapted to various engine configurations.

5. Easy Installation: The carburetor comes with a detailed manual and is relatively easy to install, even for those with limited experience.

1. Complexity: The Holley L-4778 is a complex carburetor with multiple adjustments, requiring a certain level of expertise to tune and maintain.

2. Cost: The carburetor is priced higher than some other options in the market, making it a significant investment for some enthusiasts.

3. Fuel Consumption: With its high air flow and fuel delivery capabilities, the Holley L-4778 can consume more fuel than some standard carburetors, leading to higher operating costs.

4. Maintenance: The carburetor requires regular maintenance, including adjustments and rebuilds, to ensure optimal performance and longevity.

The Holley L-4778 700 CFM Double Pumper Carburetor with manual choke is a high-performance carburetor that offers numerous advantages over standard options. Its high air flow, manual choke system, and double pumper design make it a popular choice among automotive enthusiasts. However, its complexity, cost, fuel consumption, and maintenance requirements are important considerations that should be taken into account before making a purchase.

If you're looking for a high-performance carburetor for your automotive project, the Holley L-4778 is an excellent option. However, it's essential to weigh the pros and cons carefully and consider your budget, experience level, and engine requirements before making a purchase. If you're new to carburetors or have a limited budget, you may want to consider a less complex and more affordable option.

Details:

Sold as a rebuild able core but appears complete.

part #: l4778 prices

• $899.95-$925.99

specifications carbcoon:

• for models: 700
• brand: Holley
• mpn: L-4778
• choke type: Mechanical
• type: Carburetor
• mounting flange type: Square Bore
• material: Aluminum
• universal fitment: Yes
• country of origin: United States

general carbcoon:

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

payments carbcoon:

• other
• credit card: Mastercard
• wallet: Paypal

returns carbcoon:

• policy: No Returns

seller carbcoon:

• city: Saint Johns, Michigan
• rating: 99.6%
• # reviews: 1226

shipping carbcoon:

• type: Calculated
• transit: 4-8 Days
• carrier: UPS
• cost: $27.38
• class: Standard
• service: UPS Ground

offer carbcoon:

• sold: 0
• started: March 27, 2026
• options: Ship-to-home
• quantity: 1
• best offers: True
• availability: In Stock

Holley L-4778 Is Similar To:

• Holley 4557 Ls6 L78 396 454 Carburetor 3967477-gg 1970 Chevelle Camaro Nova (42.8% 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 3886091 L-88 427 Corvette Carb 3886091an (38.2% similar) 427 L-88 corvette carburetor.holley 780 .part number 388-6091 an ,work great...(May 17th, 2024)
• Holley 10741 Teapot 4000 4-barrel Carburetor 1074-1 Core 1955 Ford Thunderbird 292 V-8 (47.1% 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 (49.4% 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 (44.2% similar) Part #: Holley FR-80457S for sale...(May 17th, 2024)
• Holley 80531 Front Primary Center Hung Fuel Bowl Cathedral Dp Double Pumper Vac Sec (34.7% 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 (41.7% 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 (40% 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 (38.3% 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 3972121 4555 Carb 1970 Lt1 Corvette And Camaro Z28 4 Speed 904 Oct 1969 Restored (21.1% similar) Part #: Holley 3972121 for sale...(May 18th, 2024)
• Holley 3969898-gr 4492 Carb 9b2 Dec 69 1970 454 Ls6 396 L78 Automatic Chevelle Camaro Nova (23% similar) Part #: Holley 3969898-GR for sale...(May 18th, 2024)