HOLLEY 0-86670-1 Performance Ultra Carburetor 0-86770BK 670CFM

( Brand: Holley ), ( Manufacturer Part Number: 0-86670-1 ), ( Choke Type: Electric ), ( Type: Ultra Street Avenger Carburetor ), ( Manufacturer Warranty: Yes ), ( Country Of Origin: United States )

Review HOLLEY Rebuilt Performance 670cfm Ultra Carburetor fits STREET AVENGER

The Holley 0-86670-1 670cfm Ultra Street Avenger Carburetor is a high-performance automotive component designed for enthusiasts seeking to enhance the power and efficiency of their classic or modern muscle cars. This carburetor is part of Holley's Ultra series, which is renowned for its advanced engineering, versatility, and ease of use.

The Ultra Street Avenger 670cfm Carburetor is a 4-barrel design, featuring four 1050 CFM Holley AVS-R street bowl throttle bodies. With a generous 670 cubic feet per minute (CFM) airflow capacity, this carburetor is suitable for large displacement engines, such as those found in late-model muscle cars, hot rods, and custom builds.

The Ultra Street Avenger Carburetor boasts a number of innovative features designed to optimize power delivery and improve drivability. These include Holley's advanced vacuum secondary system, which utilizes three-angle vacuum secondary ports to provide a more efficient fuel/air mixture, resulting in smoother idling and improved acceleration. Additionally, the carburetor features a built-in vacuum pump, eliminating the need for an external pump, making installation simpler and more convenient.

Holley's Ultra Street Avenger Carburetor also includes a unique, removable, and adjustable power valve system, which allows for fine-tuning of the power valve to optimize performance for various engine configurations. Moreover, it comes with a built-in electric choke, ensuring a quick and reliable start, even in cold weather conditions.

The Ultra Street Avenger Carburetor's robust construction includes a billet aluminum base, which not only provides superior strength and durability but also features an integrated oil filter mount and provisions for a remote oil filter. The carburetor also features a heavy-duty linkage system, including adjustable linkage arms and stainless steel mounting hardware, ensuring a stable and reliable connection between the carburetor and the engine.

Holley's 670cfm Ultra Street Avenger Carburetor comes complete with all necessary hardware, including fuel bowls, gaskets, and mounting hardware, making installation a straightforward process. The carburetor is also E.O.D. (Emissions Legal in All 50 States) certified, making it an excellent choice for those looking to maintain emissions compliance while maximizing power and performance.

In summary, the Holley 0-86670-1 670cfm Ultra Street Avenger Carburetor is a high-performance, versatile, and easy-to-use component that is perfect for muscle car enthusiasts seeking to optimize power and efficiency in their engine setup. Its innovative features, robust construction, and ease of installation make it a top choice for those looking to take their classic or modern muscle car to the next level.

Holley 0-86670-1 670 CFM Ultra Street Avenger Carburetor: Pros, Cons, and Conclusion

The Holley 0-86670-1 670 CFM Ultra Street Avenger Carburetor is a popular choice among automotive enthusiasts for its high-performance capabilities. Let's examine the key advantages and disadvantages of this carburetor to help you make an informed decision.

1. High-performance: The Holley Ultra Street Avenger carburetor delivers impressive performance, making it suitable for both street and strip applications. It is designed to provide excellent idle quality and smooth throttle response.

2. Easy-to-tune: Holley's advanced design includes a built-in power valve system, making it easier to tune your engine for optimal performance. This can save time and effort, especially compared to older carburetor designs.

3. Versatile: The Ultra Street Avenger carburetor is available in various sizes, allowing you to choose the one that best fits your engine's specifications. This makes it a versatile option for a wide range of applications.

4. Durable: Holley carburetors are known for their robust construction and durability. The Ultra Street Avenger carburetor is no exception, featuring high-quality materials and precise manufacturing processes to ensure long-lasting performance.

5. Improved airflow: The Ultra Street Avenger carburetor features an improved airflow design, which helps to reduce fuel consumption and improve engine efficiency. This can lead to better performance and fuel savings over time.

1. Cost: The Holley Ultra Street Avenger carburetor is more expensive than some other carburetor options on the market. This may be a significant consideration for those on a tight budget.

2. Complexity: Compared to some simpler carburetor designs, the Ultra Street Avenger carburetor may be more complex to install and tune. This could require additional time and expertise.

3. Requires additional components: To get the most out of the Ultra Street Avenger carburetor, you may need to purchase additional components such as fuel pressure regulators, fuel pumps, and other accessories. This can add to the overall cost of the project.

The Holley 0-86670-1 670 CFM Ultra Street Avenger Carburetor offers several advantages, including high-performance, ease of tuning, versatility, durability, and improved airflow. However, it also has some disadvantages, such as a higher cost, complexity, and the requirement for additional components. Ultimately, if you're looking for a high-performance carburetor that can deliver excellent results, the Ultra Street Avenger is a worthwhile investment. However, if you're on a tight budget or prefer a simpler carburetor design, you may want to consider other options.

If you're in the market for a high-performance carburetor and are willing to invest the time and money required for installation and tuning, the Holley 0-86670-1 670 CFM Ultra Street Avenger Carburetor is an excellent choice. It offers impressive performance, advanced features, and durable construction that can help take your engine to the next level. However, if you're on a tight budget or prefer a simpler carburetor design, you may want to consider other options such as a Holley Double Pumper or a Holley Street Avenger carburetor. Ultimately, the best choice depends on your specific needs, budget, and level of expertise.

Details:

That should likely be replaced if you plan to use it. The original electrical choke house has a small crack in the plastic. Includes Morose vacuum secondary tuning springs. Choke plate was removed and is included.

Rebuilt with all new Holley Tricked and fuel filters. Rebuilt Ultra Street Avenger 670 cfm vacuum secondary carb.

part #: 0866701 prices

• $485.00-$921.95

specifications carbcoon:

• for models: Street, Avenger
• brand: Holley
• mpn: 0-86670-1
• choke type: Electric
• type: Ultra Street Avenger Carburetor
• manufacturer warranty: Yes
• country of origin: United States

returns carbcoon:

• policy: No Returns

payments carbcoon:

• credit card: Mastercard
• other
• money order
• wallet: Google-pay

seller carbcoon:

• city: Farmington, Missouri
• rating: 100.0%
• # reviews: 451

offer carbcoon:

• quantity: 1
• options: Ship-to-home
• best offers: True
• started: February 9, 2026
• sold: 0
• availability: In Stock

general carbcoon:

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

shipping carbcoon:

• transit: 4-11 Days
• class: Economy
• type: Calculated
• service: UPS Ground Saver
• cost: $16.54
• carrier: UPS

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