HOLLEY 0-86770BKK Ultra Carburetor Cfm Vacuum Secondary

( Brand: Holley ), ( Manufacturer Part Number: 0-86770BKK ), ( Choke Type: Electric ), ( Type: Carburetor ), ( Mounting Flange Type: Square Bore ), ( Material: Aluminum ), ( Country/region Of Manufacture: United States ), ( Universal Fitment: Yes )

Review HOLLEY Ultra Carburetor Alum Cfm Vacuum Secondary fits STREET AVENGER 770

The Holley 0-86770BKK Ultra Street Avenger Carburetor is a high-performance, aluminum, 770 CFM vacuum secondary carburetor designed for street applications. This carburetor is part of Holley's Ultra series, which offers improved idle quality, easy tuning, and enhanced drivability.

The Ultra Street Avenger features a unique bowl design with a large, 3-inch diameter, allowing for increased fuel capacity and improved fuel distribution. The carburetor also includes Holley's advanced vacuum secondary system, which utilizes a progressive vacuum secondary diaphragm for precise fuel metering and improved idle quality. This system helps to maintain consistent fuel delivery under varying vacuum conditions, ensuring smooth operation and improved drivability.

The Ultra Street Avenger is constructed from high-quality, 6061-T6 aluminum, making it both lightweight and durable. It also includes Holley's proprietary internal components, such as the Ultra Pumper fuel pump and Ultra Lights hollow core jets, which provide optimal fuel delivery and tunability.

The carburetor is equipped with a 4-corner adjustable linkage system, allowing for easy adjustments to idle mixture and air fuel ratio. It also includes a removable bowling bowl, which simplifies maintenance and makes it easy to change jets and other internal components.

Additionally, the Ultra Street Avenger includes Holley's proven Emulsion Tube Technology, which offers improved atomization and fuel distribution, resulting in better combustion and increased power. The carburetor also comes with a full complement of accessories, including a float bowl gasket set, mounting hardware, and a 10-micron air filter.

In summary, the Holley 0-86770BKK Ultra Street Avenger Carburetor is a high-performance, vacuum secondary carburetor designed for street applications. It offers improved idle quality, easy tuning, and enhanced drivability, making it an excellent choice for enthusiasts looking to maximize the performance of their street engine.

The Holley 0-86770BKK Ultra Street Avenger Carburetor is a popular choice among automotive enthusiasts for its high-performance capabilities and vintage aesthetics. Here are some pros and cons to help you make an informed decision before purchasing:

1. High Flow Rate: With a vacuum secondary system and a CFM rating of 770, this carburetor delivers excellent airflow, making it suitable for high-performance applications.

2. Vacuum Secondary System: This feature allows for improved idle quality and smooth power delivery throughout the RPM range.

3. Easy-to-Tune: Holley carburetors are known for their ease of tuning, allowing users to customize the fuel mixture for optimal engine performance.

4. Durable Construction: The carburetor's aluminum body and brass components ensure durability and long-lasting performance.

5. Classic Design: The Ultra Street Avenger's classic design is a popular choice among hot rod and custom car enthusiasts.

1. Complexity: Holley carburetors, while high-performing, can be more complex to install and tune compared to modern fuel injection systems.

2. Price: The Ultra Street Avenger is a premium product, and its price point may be higher than some other carburetor options on the market.

3. Fuel Economy: Carburetors generally do not offer the same level of fuel efficiency as modern fuel injection systems.

4. Emissions: Carburetors may not meet modern emission standards, making them less suitable for daily drivers or vehicles subject to emissions testing.

In conclusion, the Holley 0-86770BKK Ultra Street Avenger Carburetor is an excellent choice for enthusiasts seeking high-performance and classic aesthetics. Its high CFM rating, vacuum secondary system, and ease of tuning make it a popular choice among hot rod and custom car enthusiasts. However, the complexity of installation and tuning, higher price point, lower fuel efficiency, and potential emissions issues should be considered before making a purchase.

If you're looking for a high-performance carburetor for a custom or hot rod project and are willing to invest the time and resources into its installation and tuning, the Holley 0-86770BKK Ultra Street Avenger Carburetor is an excellent choice. However, if you prioritize ease of use, fuel efficiency, and low emissions, you may want to consider other options, such as modern fuel injection systems.

Details:

Comes as pics. HOLLEY 0-86770BKK ULTRA STREET AVENGER CARBURETOR ALUM 770 cfm VACUUM SECONDARY Super nice looking carb, it moves freely but has been sitting and may need gaskets.

part #: 086770bkk prices

• $699.95-$921.95

specifications carbcoon:

• for models: 770, Street, Avenger
• brand: Holley
• mpn: 0-86770bkk
• choke type: Electric
• type: Carburetor
• mounting flange type: Square Bore
• material: Aluminum
• country/region of manufacture: United States
• universal fitment: Yes

returns carbcoon:

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

payments carbcoon:

• money order
• credit card: Visa
• wallet: Paypal
• other

general carbcoon:

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

shipping carbcoon:

• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• cost: $30.00
• type: Fixed
• transit: 3-7 Days

seller carbcoon:

• rating: 99.8%
• # reviews: 4004
• city: Fair Oaks, California

offer carbcoon:

• quantity: 1
• availability: In Stock
• best offers: True
• started: September 23, 2025
• options: Ship-to-home
• sold: 0

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