Holley 670 Ultra Street Avenger with Black Billet

Ultra Light
Crafted from aluminum, this carburetor offers a remarkable 43% weight reduction compared to traditional options.

Ultra Shiny
The tumble-polished finish ensures that your carburetor retains its shine for longer, making it look as good as it performs.

Ultra Strong
With billet metering blocks and base plates, you can trust in its durability and strength.

Ultra Cool
The black anodized billet aluminum metering blocks and base plate not only look sleek but also enhance performance.

Ultra Easy
Featuring a built-in sight window, making float adjustments is a breeze—no mess, no hassle.

Ultra Fast
Designed with high-performance fuel curves, this carburetor ensures quick response and efficiency.

The Ultra Street Avenger carburetors are built entirely from aluminum and feature metering blocks and a base plate made from 6061-T6 billet aluminum. Choose from three vibrant anodized colors—Red, Blue, or Black—to give your engine bay a personalized touch while enjoying the robust strength of billet construction. Weighing in at about 5 lbs lighter than a comparable zinc carburetor, this option is both practical and stylish.

These new Ultra Street Avenger carburetors come packed with the same fantastic features as their aluminum siblings. Enjoy the tumble-polished aluminum finish, quick-change vacuum secondaries for easy tuning, four vacuum ports for all your accessory needs, a factory preset electric choke for smooth startups, built-in fuel filters, and a complete fuel line kit—no more unnecessary trips to the auto parts store! The Ultra Street Avengers also maintain the optimized street calibration you expect, ensuring they perform beautifully in your vehicle. Plus, with anodized metering blocks and a clear fuel level sight glass, adjustments are straightforward and mess-free.

The polished appearance, combined with your choice of Red, Blue, or Black metering blocks and throttle body, will undoubtedly make your ride stand out, whether you're at a car show or hitting the track.

When it comes to performance, trust the experts. Holley has been a leader in modular carburetor technology for over a century and has powered every NASCAR champion since the 1960s.

Important Downloads:

• Instructions for Part# 0-86670BK
• Avenger Limited Lifetime Warranty
• Carburetor Numerical Listing for Part #0-86670BK

Features:

• Striking black anodized billet aluminum metering blocks and base plate for a stylish look and reliable gasket sealing.
• Optimized street calibration ensures it works right out of the box.
• Factory preset electric choke makes starting up simple.
• Vacuum secondaries provide versatility for various vehicles, with a quick-change vacuum housing cap for tuning performance or fuel economy (springs included).
• 4 corner idle system allows for precise idle control.
• Clear fuel level sight glass for easy, no-mess adjustments.
• Lightweight aluminum construction offers a significant weight savings of 43%.
• Compatible with GM, Chrysler, and Ford A/T kickdown linkage (additional parts may be needed).
• Fuel line kit included, eliminating extra trips to the parts store.
• Limited lifetime warranty—guaranteed free from defects in materials and workmanship for the product's lifespan!
• 100% wet-flow tested by Holley technicians to ensure it’s ready to run right out of the box!

Specifications:

• Barrels: 4
• Billet Color: Black
• Booster: Straight
• CFM: 670
• Choke: Electric
• Emission Code: 3
• Finish: Shiny
• Fuel: Gasoline
• Fuel Inlet: Dual
• Material: Aluminum
• Model: 4150
• Primary Main Jet: 63
• Primary Power Valve: 6.5
• Primary Pump Nozzle Size: 31
• Product Type: 4150 Model Carburetor
• Secondaries: Vacuum
• Secondary Main Jet: 73
• Supercharged Application: No
• Throttle Bore: 1.6875 inches
• Vacuum Ports: 1 timed (spark) port, 2 full, and 1 PCV port
• Warranty: Limited 1 Year Warranty

Notes:

• This carburetor features a square bore flange bolt pattern. It can replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with a 5 3/16" x 5 5/8" bolt pattern. If you're using a spreadbore style intake manifold, an adapter will be necessary for installation, similar to the Mr. Gasket #1932.