HOLLEY Carburetor Cfm Vacuum Secondaries HO0-81570 4-BBL
fits model: 570, Street, Avenger.
( Brand: Holley ), ( Manufacturer Part Number: 0-81570 ), ( Part Type: Vacuum Carburetor ), ( Ipn: Ho0-81570 ), ( California Prop 65 Warning: Warning ), ( Seller: Summit Racing Equipment ), ( Carburetor Cfm: 570 Cfm ), ( Carburetor Fuel: Gasoline ), ( Carburetor Flange: Square Bore ), ( Carburetor Choke: Manual ), ( Carburetor Secondaries: Vacuum ), ( Carburetor Type: Holley Street Avenger Carburetors )
Review HOLLEY Carburetor Cfm Vacuum Secondaries fits STREET AVENGER 570
The Holley Street Avenger Carburetor, model number HO-81570, is a 4-barrel, 570 CFM vacuum secondary carburetor that is ideal for street performance applications. This carburetor is part of Holley's Street Avenger series, which is known for its exceptional fuel delivery and ease of tuning.
The Holley HO-81570 features four 750 CFM venturi throats, each topped with a 1.5-inch diameter, polished aluminum, adjustable barrel. The barrels are equipped with 0.080-inch metering rods and include Holley's unique Ultra-Lite Secondary Emulsion System. This system ensures consistent fuel delivery under varying vacuum conditions, resulting in smooth idle and improved acceleration.
The carburetor's vacuum secondary system is adjustable, allowing you to fine-tune the fuel mixture for various driving conditions. The secondary circuits are controlled by vacuum-operated diaphragms, which provide precise fuel delivery based on engine vacuum.
This carburetor comes with a Holley's durable cast aluminum base and includes integral oil feed and return passages. The base is also equipped with a sight plug for easy oil level monitoring. The carburetor is designed to accommodate a 1 7/8-inch or 2-inch intake manifold and includes a 1.75-inch primary float bowl and 3.5-inch secondary float bowls.
The Holley HO-81570 is equipped with Holley's Synergy Base Fuel Pressure Regulator, which provides accurate fuel pressure regulation and eliminates the need for a separate fuel pressure regulator. The regulator is adjustable from 5 to 15 psi, making it suitable for a wide range of applications.
The carburetor also includes a number of convenience features, such as a removable linkage plate, adjustable linkage brackets, and an adjustable primary idle mixture screw. The linkage plate can be easily removed for maintenance or tuning, while the adjustable linkage brackets allow you to fine-tune the carburetor's linkage for optimal performance.
Overall, the Holley HO-81570 Street Avenger Carburetor is a high-performance, easy-to-tune carburetor that is well-suited for street performance applications. Its vacuum secondary system, adjustable fuel mixture, and integrated fuel pressure regulator provide precise fuel delivery and consistent power output, while its durable construction and convenient features make it a favorite among performance enthusiasts.
Pros and Cons of Buying Holley 4-bbl 570 CFM Street Avenger Carburetor (Model Numbers 0-81570 and 0-81570-FC)
1. Pros:a. High CFM (Cubic Feet per Minute) Rating: The Holley 4-bbl 570 CFM Street Avenger Carburetor offers a large airflow capacity, which is beneficial for high-performance applications.
b. Vacuum Secondaries: Vacuum secondaries help improve engine performance by providing additional fuel during hard acceleration, resulting in improved power and throttle response.
c. Adjustability: Holley carburetors are known for their adjustability, allowing users to fine-tune the air/fuel mixture for optimal engine performance.
d. Durability: The Holley Street Avenger Carburetor is built with heavy-duty materials, ensuring it can withstand the demands of high-performance applications.
2. Cons:a. Complex Installation: Installing a Holley carburetor can be a complex process due to its adjustability and multiple components.
b. Cost: Holley carburetors can be more expensive than some other options on the market, making them a potential investment for enthusiasts.
c. Requires Specific Tuning: To get the most out of the Holley carburetor, it may require specific tuning, which can be a time-consuming and potentially expensive process.
Conclusion:The Holley 4-bbl 570 CFM Street Avenger Carburetor (Model Numbers 0-81570 and 0-81570-FC) offers several advantages, including high airflow capacity, vacuum secondaries, adjustability, and durability. However, it also comes with some disadvantages, such as a complex installation process, higher cost, and the need for specific tuning.
Despite the cons, the pros of this carburetor often outweigh the cons for those seeking high-performance applications. Its adjustability, vacuum secondaries, and large airflow capacity make it an excellent choice for those looking to maximize their engine's potential.
Recommendation:If you're looking for a high-performance carburetor with vacuum secondaries and adjustability, the Holley 4-bbl 570 CFM Street Avenger Carburetor (Model Numbers 0-81570 and 0-81570-FC) is a strong contender. However, be prepared for a complex installation process and the potential need for specific tuning to get the most out of this carburetor. Ultimately, the investment in this carburetor could lead to significant power gains and improved engine performance.
Details:
Holley 0-81570 Carburetor, Street Avenger, 570 cfm , Square Bore, 4-Barrel, Vacuum, Manual Choke, Dual Inlet, Silver, Each. Please hover mouse to image.
part #: 081570 prices
- $84.33-$400.00
specifications carbcoon:
- for models: 570, Street, Avenger
- brand: Holley
- mpn: 0-81570
- part type: Vacuum Carburetor
- ipn: Ho0-81570
- california prop 65 warning: Warning
- seller: Summit Racing Equipment
- carburetor cfm: 570 Cfm
- carburetor fuel: Gasoline
- carburetor flange: Square Bore
- carburetor choke: Manual
- carburetor secondaries: Vacuum
- carburetor type: Holley Street Avenger Carburetors
seller carbcoon:
- rating: 98.9%
- city: Tallmadge, Ohio
- # reviews: 1130778
offer carbcoon:
- sold: 0
- started: September 23, 2025
- options: Ship-to-home
- availability: In Stock
payments carbcoon:
- credit card: Mastercard
- wallet: Paypal
- other
general carbcoon:
- Car Truck Parts Accessories > Air Fuel Delivery > Carburetors
- condition: New
returns carbcoon:
- policy: Returns Accepted
- time: 60 Days
- paid by: Seller
shipping carbcoon:
- service: Economy
- transit: 2-4 Days
- type: Fixed
- class: Economy
- cost: $0.00
Holley 0-81570 Is Similar To:
- Holley 4557 Ls6 L78 396 454 Carburetor 3967477-gg 1970 Chevelle Camaro Nova (43% similar) She was removed off of a running BBC motor but has been sitting for few months. It has not been tested and could possibly need work, labor, other parts/materials before use. May be shipped via ups, USPS or FedEx. The base plate was replaced. Selling an oem Holley list 4557 carburetor with...(May 17th, 2024)
- Holley 10741 Teapot 4000 4-barrel Carburetor 1074-1 Core 1955 Ford Thunderbird 292 V-8 (43.8% similar) Ford part number EYCK-9510-T. Holley teapot 4000 4-BARREL carburetor, list number 1074-1. Please verify part number and pictures match your application. Linkage moves free. See pics for condition. Carb core appears to be mostly complete. Core for rebuilding or parts...(May 17th, 2024)
- Holley 1920 Vintage Glass Bowl Carburetor Hot Rod Gasser Carb Core Rebuild (39.5% similar) Good condition all linkage moves as it should great for rebuild...(May 17th, 2024)
- Holley Fr-80457s 0-80457s 600cfm Street Warrior Electric Choke Factory (43.1% similar) Part #: Holley FR-80457S for sale...(May 17th, 2024)
- Holley 06425c Two Barrel 650cfm Carburetor 6425 Imca Cheater Outlaw Racing Core (42% similar) Rare Holley two barrel carburetor, list number 6425 - carb is together with choke removed but horn intact metering block also in very nice physical condition, all linkage moves freely kick down arm as well good overall core condition has been sitting fryers it should base and bores look...(May 17th, 2024)
- Holley Ecz-9510-m Teapot 4000 4-barrel Carburetor 1161-2 Carb 1956 Ford Thunderbird 312 V-8 (39.1% similar) Carb core appears to be mostly complete. Core for rebuilding or parts. Holley teapot 4000 4-BARREL carburetor, list number 1161-2. Please verify part number and pictures match your application. See pics for condition. Ford part number CZ-9510-M. Linkage moves free...(May 18th, 2024)
- Holley R3310-1 Carburetor List-3310-1 780cfm H4-4150 4bbl Carb Ford Chevy Bop Mopar (38.6% similar) Used Holley 780 cfm 4BBL carburetor. Being sold for parts, restoration, core, rebuild. Looks to be complete, no cracks, being sold as/is. LIST-3310-1, date, 0653...(May 18th, 2024)
- Holley 1850-3 Carburetor 4 Barrel 600 Cfm Vac Secondary Nice Rebuildable Core (53.8% similar) Many of the carbs have been rebuilt and were sitting in plastic bags, but I no history on what was done to them. It is missing a part of the electric choke. Very nice and clean vintage. Spectre fuel system accessory carburetor. The rest of it looks complete. 600 cfm vac...(May 19th, 2024)
- Holley 4360 Economaster 450 Cfm Carburetor 7454 Quadrajet Replacement Chevrolet (39.5% similar) List number is 7454. For sale is one 1 used Holley 4360 series 450 cfm spread bore carburetor. Verify it will fit your application prior to purchasing. Please look closely at all the pictures for condition and details. The carb is in poor shape and for parts only...(May 19th, 2024)
- Holley List-7001 4165 Spreadbore Carburetor 650cfm Core Or Parts (51% similar) This model is a spread bore design double pumper with two accelerator pumps. You are buying on a Holley model 4165 four-barrel carburetor, stamped p/n # LIST-7001, date code 1610, rated at 650 cfm ...(May 19th, 2024)
- Holley 4779 4150 4779 750cfm Competition Drag Racing Double Pumper Carburetor (36.3% similar) Holley 4150/4779/750C fm, competition drag racing double pumper carburetor. Is totally rebuilt, is in like new condition, and ready to install. This is an actual photo of the carb...(May 19th, 2024)
