Holley 0-86770HB Ultra Street Avenger 770 CFM 4 Barrel Carburetor

The Ultra Street Avenger Carburetors feature all aluminum construction and are equipped with metering blocks and a base plate made from 6061–T6 billet aluminum. Three different anodized color options (Red, Blue, or Black) allow for a personalized look while maintaining the ultra high strength and durability you get from billet. They weigh in at approximately 5 lbs less than a comparable zinc carburetor.

The new Ultra Street Avenger Carburetors have the same great features as their aluminum counterparts such as quick change vacuum secondaries for easy tuning to optimize performance or fuel economy; four vacuum ports for all necessary vacuum accessories; factory preset “No trouble” electric choke for easy start ups; built–in fuel filters; and an included fuel line kit so there are no unnecessary trips back to the parts store. This four barrel carb features the same optimized street calibration as the zinc versions so you know they will run great on your vehicle. In addition, the Ultra Street Avenger now comes with anodized metering blocks and a base plate made from 6061–T6 billet aluminum and a built in, clear fuel level sight glass for easy, no mess fuel level adjustments.

The clean, Hard Core Gray™ w/ black anodized billet aluminum metering blocks and base plate will certainly set your ride apart whether you are at the show or track.

Don't trust your performance to just anyone, Holley is the only Modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.

• ULTRA light – aluminum construction for 43% weight savings
• ULTRA strong – billet metering blocks and base plates
• ULTRA cool – Hard Core Gray™ w/ black anodized billet aluminum metering blocks and base plate
• ULTRA easy – built in sight window for simple float adjustments
• ULTRA fast – high performance fuel curves
• Hard Core Gray™ w/ black anodized billet aluminum metering blocks/base plate with black hardware
  
• Vacuum secondaries allow use on a wide variety of vehicles
  
• 1 timed (spark) port, 2 full vacuum, and 1 PCV port
  
• Ford A/T kickdown, does not work with AOD transmissions
  
• Glass fuel level sight windows for easy and safe initial float level adjustment
  
• Aluminum construction for weight savings
  
• 4 corner idle adjustability
  
• Electric choke for easy cold starting and warm up
  
• Casting is hard coat anodized for ultimate corrosion resistance

• ULTRA light – aluminum construction for 43% weight savings
• ULTRA strong – billet metering blocks and base plates
• ULTRA cool – Hard Core Gray™ w/ black anodized billet aluminum metering blocks and base plate
• ULTRA easy – built in sight window for simple float adjustments
• ULTRA fast – high performance fuel curves
• Hard Core Gray™ w/ black anodized billet aluminum metering blocks/base plate with black hardware
  
• Vacuum secondaries allow use on a wide variety of vehicles
  
• 1 timed (spark) port, 2 full vacuum, and 1 PCV port
  
• Ford A/T kickdown, does not work with AOD transmissions
  
• Glass fuel level sight windows for easy and safe initial float level adjustment
  
• Aluminum construction for weight savings
  
• 4 corner idle adjustability
  
• Electric choke for easy cold starting and warm up
  
• Casting is hard coat anodized for ultimate corrosion resistance

Installation Instructions (PDF)