HOLLEY 2011491 Carburetor Double Pumper 34R 2178B 7923 2667

( Brand: Holley ), ( Manufacturer Part Number: 2011491 ), ( Type: Carburetor ), ( Oe/oem Part Number: List-7923 ), ( Vintage Part: Yes )

Review HOLLEY 2011 491 Bl Carburetor Double Pumper 34r List Date

The Holley 2178B 7923 2667 2011491 Double Pumper Carburetor, specifically designed for 340ci engines, is a high-performance automotive component that delivers exceptional fuel delivery and airflow for enhanced engine response and power. This carburetor, part of Holley's 350 series, is an ideal choice for hot rods, muscle cars, and custom builds.

This double pumper carburetor comes equipped with a unique design featuring two four-barrel style pumps. Each pump has its own vacuum secondary circuit, ensuring consistent fuel delivery under various engine conditions. The pumps are driven by a single gear and are fully adjustable for optimal performance.

The 2178B 7923 2667 is built using Holley's proven High-Performance Bowl technology. This design provides increased fuel capacity and better atomization, resulting in improved combustion efficiency and power output. The bowl is also fitted with a removable sight plug, making it easy to monitor the fuel level.

The carburetor's base gasket is made from high-temperature materials, ensuring durability and reliability even under extreme operating conditions. The base gasket also features a built-in electric choke, providing quick and efficient cold starting.

This double pumper carburetor comes with a 670cfm venturi size, which is suitable for a wide range of engine applications. The venturi is designed with a fine micrometer bore for precise adjustability, allowing you to fine-tune the fuel mixture for optimal performance.

The 2178B 7923 2667 includes a variety of mounting options, including a traditional offset flange and a square-bore flange. This versatility makes it easy to install on a wide range of vehicle applications.

The carburetor comes with a high-quality, chrome finish that not only looks great but also provides excellent resistance to corrosion and wear. The floats and jets are made from glass-filled nylon, ensuring durability and resistance to fuel and chemical damage.

In summary, the Holley 2178B 7923 2667 2011491 Double Pumper Carburetor is a high-performance, versatile, and reliable component that delivers exceptional fuel delivery and airflow for increased engine response and power output. Its unique double pumper design, proven High-Performance Bowl technology, and various mounting options make it an ideal choice for hot rods, muscle cars, and custom builds.

The Holley 2178 Double Pumper 340 cID Carburetor (part number 2011491) is a popular choice among hot rod and muscle car enthusiasts for its high-performance capabilities. However, like any automotive part, it comes with its own set of advantages and disadvantages.

1. High-performance: This carburetor is designed for high-performance applications, making it ideal for engines that require more fuel and air mixtures for optimal power output.

2. Fuel efficiency: The Holley Double Pumper carburetor offers excellent fuel efficiency by providing an accurate fuel mixture for the engine's needs.

3. Easy to adjust: The carburetor comes with multiple adjustment options, allowing users to fine-tune the fuel and air mixture for their specific engine and driving conditions.

4. Durable: Holley carburetors are known for their durability, and the 340 cID Double Pumper is no exception. It is built to withstand the demands of high-performance applications.

5. Versatile: The carburetor can be used in a variety of applications, including street rods, drag cars, and race cars.

1. Complexity: The Holley 340 cID Double Pumper Carburetor is a complex piece of machinery, and installing and tuning it can be a challenging process for those without experience.

2. Cost: Compared to other carburetors on the market, the Holley 340 cID Double Pumper is more expensive due to its high-performance capabilities and advanced features.

3. Maintenance: The carburetor requires regular maintenance to ensure it continues to perform optimally. This includes regular cleaning and adjustments.

4. Fuel consumption: Due to its high-performance capabilities, the carburetor may consume more fuel than other carburetors, which could lead to higher operating costs.

The Holley 2178 Double Pumper 340 cID Carburetor is a high-performance carburetor that offers excellent fuel efficiency, ease of adjustment, durability, and versatility. However, it comes with a complex installation process, a higher cost than other carburetors, the need for regular maintenance, and potentially higher fuel consumption.

If you are looking for a high-performance carburetor for your hot rod or muscle car, the Holley 2178 Double Pumper 340 cID Carburetor is an excellent choice. However, it is important to note that it requires experience and knowledge to install and tune it properly. Additionally, be prepared for the higher cost and ongoing maintenance requirements. If you are not confident in your ability to install and tune the carburetor yourself, it may be worth considering hiring a professional to do it for you.

Details:

The Holley 4 Bl Carburetor Double Pumper 34r 2178B 2011 491 is a vintage performance part with barrel count.

part #: 2011491 prices

• $80.00-$100.00

specifications carbcoon:

• brand: Holley
• mpn: 2011491
• type: Carburetor
• oe/oem part number: List-7923
• vintage part: Yes

returns carbcoon:

• policy: No Returns

seller carbcoon:

• rating: 100.0%
• # reviews: 307
• city: Middleburg, Pennsylvania

general carbcoon:

• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors
• condition: For parts or not working

shipping carbcoon:

• service: USPS Ground Advantage
• transit: 4-9 Days
• type: Calculated
• cost: $25.40
• class: Standard
• carrier: USPS

offer carbcoon:

• quantity: 1
• availability: In Stock
• sold: 0
• started: October 19, 2025
• options: Ship-to-home
• best offers: True

payments carbcoon:

• credit card: Discover
• other
• wallet: Google-pay

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