HOLLEY 122-64 Carburetor Standard Jet 090127021583

( Brand: Holley ), ( Part Type: Jet Carburetor ), ( Manufacturer Part Number: 122-64 ), ( UPC: 090127021583 )

Review HOLLEY Carburetor Standard Main Jet

The Holley 122-64 carburetor is a classic and high-performing fuel delivery system designed for applications seeking superior throttle response, fuel efficiency, and smooth power delivery. This particular model, the 122-64, is a part of Holley's Standard Series line, characterized by its robust construction and versatile design suitable for various performance applications, especially muscle cars and hot rods.

This carburetor boasts a 122 cubic inch baseplate, which is spaciously capable of housing four 2-barrel Quadra-Jet type jet circuits. These fuel circuits deliver an optimal fuel-air mixture to ensure a steady and consistent power output. The carbs come pre-assembled with the standard jet set, including four 64 main jets and one 410 power jet.

The Holley 122-64 features mechanical secondary systems designed to enrich the fuel mixture during heavy acceleration or high RPMs. More specifically, it utilizes an accelerator pump system which shoots an additional fuel mixture into the intake during wide-open throttle conditions to ensure a good power band. Furthermore, an automatic choke system is integrated into the design, assisting in ease of starting, especially in cold weather conditions.

Another key feature of this carburetor is its vacuum secondary system. This system utilizes a 7.5:1 mechanical vacuum secondary metering to provide a rich fuel mixture during full throttle conditions. Vacuum secondaries help regulate the fuel mixture according to engine vacuum, generating more power while promoting better fuel efficiency - making it a premium choice for high-performance applications.

In terms of maintenance and customization, the 122-64 carburetor offers easy needle and jet changes, allowing for fine-tuning of the fuel mixture for optimal engine performance under various conditions. The base gasket and gasket compressors are included to ensure trouble-free installation and removal, making this carburetor a dependable choice for those seeking a powerful, customizable fuel delivery system for their restoration or high-performance projects.

Holley 122-64 Carburetor: A Detailed Analysis

The Holley 122-64 carburetor is a popular choice for hot rods and performance vehicles. It is a 2-barrel carburetor with a vacuum secondary system, providing excellent air/fuel mixtures for increased horsepower and torque. Here are some pros and cons to help you make an informed decision about purchasing this carburetor:

1. Vacuum secondary system: The Holley 122-64 carburetor utilizes a secondary system that kicks in when vacuum is applied. This feature allows the carburetor to deliver more fuel under high RPM and wide-open-throttle conditions, resulting in improved performance.

2. Versatile applications: The Holley 122-64 carburetor is suitable for various engine types, including small-block Chevy, Ford, and Chrysler applications. It is also adaptable to different intake manifolds.

3. Customizable: You can easily adjust the Holley 122-64 carburetor to fit your specific engine requirements by using different jet sizes, emulsion tubes, and primary and secondary needle configurations.

4. Durable design: The carburetor features a robust construction with billet aluminum bodies, porcelain coatings, and aluminum baseplate. It can withstand harsh racing environments.

5. Excellent fuel control: Holley carburetors are renowned for their precise fuel delivery and adjustability. This model's vacuum secondary system enhances fuel mixture control under high power conditions.

1. Complexity: The Holley 122-64 carburetor has a more complex design than some other models due to its vacuum secondary system and the multiple adjustments available. This may require a more experienced mechanic for installation and tuning.

2. Cost: The Holley 122-64 is a high-performance carburetor, and its price reflects this. It may not be within everyone's budget.

3. Requires proper installation: Proper installation and tuning are essential for optimal performance. Failure to do so may result in idle issues, fuel delivery problems, or poor performance.

The Holley 122-64 carburetor is a powerful and versatile option for performance enthusiasts looking to enhance their engine's output. Its vacuum secondary system provides excellent fuel control under high RPM and WOT conditions, making it an attractive choice for hot rods and racing applications. However, its complexity and the need for expert installation and tuning may be drawbacks for some. If you have the experience or are willing to invest in professional installation and tuning, the Holley 122-64 carburetor can offer increased horsepower, better fuel efficiency, and overall improved engine performance.

If you are looking for a high-performance carburetor for your project vehicle and have the experience or resources for proper installation and tuning, the Holley 122-64 carburetor is worth considering. However, it may not be the best choice for beginners or those on a budget. A slightly less complex, yet high-performing option with a lower learning curve could be the Holley Double-Pumper carburetor or the Holley Ultra HP carburetor, depending on your engine application. Always make sure to consult Holley's specifications and guidelines before making a decision.

part # 12264 prices

• $10.00-$15.28

specifications carbcaddie:

• brand: Holley
• part type: Jet Carburetor
• manufacturer part number: 122-64
• upc: 090127021583

returns carbcaddie:

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

payments carbcaddie:

• other
• credit card: Visa
• wallet: Paypal

seller carbcaddie:

• rating: 98.7%
• # reviews: 13982

shipping carbcaddie:

• service: UPS Ground
• class: Standard
• cost: $11.95
• carrier: UPS
• transit: 2-6 Days
• type: Fixed

offer carbcaddie:

• started: February 4, 2025
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 10

general carbcaddie:

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

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