HOLLEY 37-920 Carburetors

( Brand: Holley ), ( Manufacturer Part Number: 37-920 ), ( Type: Carburetor Rebuild Kit )

Review HOLLEY

The Holley 37-920 Double Pumper Carburetor is a high-performance fuel delivery system designed for street and race applications. This carburetor features a unique design that utilizes two independent four-barrel circuits, allowing for excellent engine response and power.

The Holley 37-920 Double Pumper Carburetor is constructed from high-quality materials, including a billet aluminum base and stainless steel components. The base plate is CNC-machined for precision and features mounting bosses for easy installation. The carburetor body is made from cast aluminum and is finished in a durable black powder coat.

The carburetor utilizes Holley's advanced vacuum secondary system, which provides additional fuel for high RPM operation. The secondary circuits are fed by a pair of electric vacuum pumps, which are mounted on the base plate. The pumps are controlled by a vacuum switch, which is adjustable for optimal performance.

The Holley 37-920 Double Pumper Carburetor comes with a set of 1050 CFM Holley AVS-R throttle bodies, which feature vacuum secondaries and provide excellent idle quality and drivability. The throttle bodies are topped with Holley's proven HP series butterflies, which offer smooth operation and excellent response.

The carburetor also includes Holley's Ultra Lite Secondary Floats, which are designed to reduce weight and provide excellent fuel distribution. The floats are made from a lightweight composite material and feature a unique design that eliminates the need for venturi needles.

The Holley 37-920 Double Pumper Carburetor is fully adjustable, allowing for easy tuning and optimization of fuel and air mixtures. The carburetor includes adjustable idle mixture and air bleed screws, as well as adjustable primary and secondary jetting. The carburetor also features a built-in fuel pressure regulator, which allows for easy adjustment of fuel pressure.

The Holley 37-920 Double Pumper Carburetor is a high-performance fuel delivery system that provides excellent power and drivability. Its unique design, high-quality construction, and adjustability make it an excellent choice for performance enthusiasts and racers. Whether you're looking to build a high-performance street machine or a race car, the Holley 37-920 Double Pumper Carburetor is an ideal choice.

The Holley 37-920 is a popular carburetor model among automotive enthusiasts for its ability to deliver reliable fuel delivery in high-performance applications. Here are some pros and cons of buying this carburetor to help you make an informed decision.

1. High-Performance: The Holley 4150 series carburetor, including the 37-920 model, is known for its ability to deliver precise fuel mixtures in high-performance applications. It is suitable for both naturally aspirated and forced-induction engines.

2. Adjustability: The Holley 37-920 comes with multiple adjustment options, allowing users to fine-tune the fuel mixture for different driving conditions and engine configurations. This includes primary and secondary jet sizes, emulsion tube length, and idle mixture screws.

3. Durable Construction: The carburetor is built with high-quality materials, including a billet aluminum base and stainless steel components, ensuring long-lasting performance.

4. Cooling Capability: The Holley 37-920 features a large cooling fin area, which helps to dissipate heat and maintain consistent fuel temperatures, especially during high-performance driving.

5. Wide Compatibility: The carburetor is suitable for a wide range of applications, including street rods, muscle cars, and race cars, making it a versatile option for enthusiasts.

1. Complexity: Compared to some other carburetor models, the Holley 37-920 is known for its complexity, which may require a higher level of expertise to install and tune effectively.

2. Cost: The carburetor is more expensive than some other options on the market, which may be a deterrent for budget-conscious enthusiasts.

3. Maintenance: The Holley 37-920 requires regular maintenance to ensure optimal performance, including jet cleaning, float level adjustments, and vacuum leak checks.

4. Fuel Economy: Due to its high-performance capabilities, the Holley 37-920 may not be the most fuel-efficient option, which could be a concern for those looking to maximize fuel economy.

The Holley 37-920 is a high-performance carburetor that offers precise fuel delivery, adjustability, durability, and cooling capability. However, it comes with a higher cost, complexity, and maintenance requirements compared to some other options on the market. If you're looking for a reliable, high-performance carburetor for your project and have the expertise to tune and maintain it effectively, the Holley 37-920 may be a worthwhile investment.

If you're considering purchasing the Holley 37-920, I would recommend thoroughly researching the installation and tuning process to ensure you have the necessary expertise. Additionally, consider the cost, maintenance requirements, and compatibility with your specific application before making a final decision. If you're looking for a more budget-friendly or less complex option, there may be other carburetor models that better suit your needs.

Details:

Genuine Holley Trick Kit, Part # 37-920, NOS Discontinued by Kit.

part #: 37920 prices

• $119.69-$450.00

specifications carbcoon:

• brand: Holley
• mpn: 37-920
• type: Carburetor Rebuild Kit

shipping carbcoon:

• transit: 2-6 Days
• type: Fixed
• class: Standard, Expedited
• cost: $0.00
• carrier: USPS, FedEx
• service: USPS Ground Advantage, FedEx 2Day

offer carbcoon:

• quantity: 1
• sold: 0
• started: October 28, 2025
• options: Ship-to-home
• availability: In Stock

returns carbcoon:

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

payments carbcoon:

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

seller carbcoon:

• rating: 99.9%
• # reviews: 39637
• city: Ontario, New York

general carbcoon:

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

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