HOLLEY L-4788-1 Carburetor Cfm Double Pumper Carb Race 4BBL 830

( Brand: Holley ), ( Manufacturer Part Number: L-4788-1 ), ( Choke Type: No Choke ), ( Type: Carburetor ), ( Mounting Flange Type: Square Bore ), ( Material: Aluminum ), ( Vintage Part: Yes )

Review HOLLEY Vintage Carburetor List#4788 830 Cfm Double Pumper 4788-1 Carb Race

The Holley L-4788-1 4150 Series 4-barrel Carburetor, also known as the 4788 830 CFM Double Pumper, is a high-performance carburetor designed for serious racers and hot rodders. This carburetor is part of Holley's legendary 4150 line, which has been a favorite among enthusiasts for decades due to its robust design and exceptional airflow capabilities.

At its core, the 4788-1 carburetor is a double-pumper design, meaning it utilizes two vacuum secondaries. This setup provides an additional fuel metering circuit for each secondary, allowing for more precise fuel delivery under wide-open throttle conditions. The result is a more consistent powerband and improved overall performance.

The 4788-1 carburetor comes with a base gasket that is specifically designed for use with Holley's Hi-Ram intake manifolds. It features a large 830 CFM primary venturi and two 680 CFM secondary venturis, which ensure an ample fuel supply for even the most power-hungry engines. The carburetor is also compatible with Holley's various fuel pressure regulators and fuel systems, allowing for easy tuning and adjustment.

One of the standout features of the 4788-1 carburetor is its adjustability. It comes with a variety of factory-set jets and emulsion tubes to accommodate a wide range of engine configurations. Holley's famous adjustable secondary metering rods also make it easy for users to fine-tune the carburetor for optimal performance.

The 4788-1 carburetor is constructed from high-quality materials, including heavy-duty aluminum and billet components. It is designed to withstand the rigors of competitive racing while still delivering consistent, reliable performance. The carburetor also features a polished finish that not only looks great but also helps protect against corrosion.

Overall, the Holley L-4788-1 4150 Series 4-barrel Carburetor is a top-performing, adjustable, and durable carburetor that is perfect for serious racers and hot rodders. Its double-pumper design, large venturis, and adjustability make it an excellent choice for high-performance applications, while its robust construction guarantees reliability and longevity.

The Holley L-4788-1 4bbl carburetor, also known as the 4788 830 CFM Double Pumper, is a popular choice among performance enthusiasts for its high airflow capacity and versatility. But like any automotive component, it comes with its own set of advantages and disadvantages.

1. High Airflow: The 830 CFM airflow rating makes it suitable for high-performance applications, such as muscle cars, hot rods, and race cars.

2. Double Pumper Design: The double pumper design ensures proper fuel delivery under high RPMs, maintaining a consistent powerband.

3. Adjustability: Holley carburetors are known for their adjustability, allowing fine-tuning of the fuel mixture for optimal engine performance.

4. Quality Construction: Holley carburetors are made with high-quality materials and precise manufacturing techniques, ensuring durability and longevity.

5. Wide Compatibility: The 4788-1 carburetor can be used with various engine types, including small-block Chevy, Ford, and Chrysler engines.

1. Complexity: Holley carburetors can be more complicated to install and tune compared to simpler designs.

2. Cost: The Holley 4788-1 carburetor is pricier than some other options on the market.

3. Maintenance: Holley carburetors require regular maintenance, including jetting, synchronization, and float adjustment.

4. Fuel Economy: The high-performance nature of the carburetor may negatively impact fuel economy.

The Holley L-4788-1 4bbl carburetor is an excellent choice for those seeking high-performance and adjustability in their automotive application. Its advantages include high airflow capacity, double pumper design, adjustability, quality construction, and wide compatibility. However, its disadvantages include complexity, cost, maintenance requirements, and potential impact on fuel economy.

If you are building a high-performance engine or racing application, the Holley L-4788-1 4bbl carburetor is a worthy investment. Its advantages far outweigh its disadvantages, and the performance gains will be noticeable. However, if you are looking for a simpler, more affordable, or fuel-efficient carburetor, there may be other options better suited to your needs.

Details:

The carb moves freely but has been sitting for years and will need to be open cleaned rebuilt. A if you follow the golden rule, and treat me as would like to be treated, I will do my best make it right by. I sometimes make mistakes, but i'm not out to cheat anyone, or sell you something you're 100% happy with. VINTAGE HOLLEY 4BBL CARBURETOR LIST#4788 830 cfm DOUBLE PUMPER 4788-1 CARB RACE.

Let me know if there is an issue. Comes as pics.

part #: l47881 prices

• $129.50-$239.99

specifications carbcoon:

• brand: Holley
• mpn: L-4788-1
• choke type: No Choke
• type: Carburetor
• mounting flange type: Square Bore
• material: Aluminum
• vintage part: Yes

offer carbcoon:

• started: February 21, 2026
• quantity: 1
• best offers: True
• availability: In Stock
• sold: 0
• options: Ship-to-home

returns carbcoon:

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

payments carbcoon:

• money order
• other
• wallet: Google-pay
• credit card: Diners-club

general carbcoon:

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

seller carbcoon:

• city: Fair Oaks, California
• # reviews: 4499
• rating: 99.9%

shipping carbcoon:

• cost: $30.00
• transit: 4-9 Days
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• class: Standard
• carrier: FedEx

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