Product Summary

Universal Fit, 4-Barrel Carburetor Barrels, 770 CFM CFM

  • It provides up to 6% more acceleration or 5% better fuel economy with simple spring change
  • The vacuum secondaries allow it to be used on a wide variety of vehicles
  • Features a tunable fuel metering system and a dual feed fuel inlet
  • Specially calibrated for monster low-end torque, awesome acceleration, & unmatched top-end horsepower
  • Includes clear sights for easy float adjustments

Rebates Available

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Key Specs

Carburetor Barrels4-Barrel
Fuel TypeGasoline
Choke TypeElectric
CFM Range700-799 CFM
CFM770 CFM
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Need To Know

Quick and Easy Returns

Return Policy

Holley 0-80770 Details

The Holley Street Avenger Model 4150 carb is the ultimate vacuum secondary street performance upgrade. This carb is street ready right out of the box and features a calibrated electric choke, air and fuel adjustments and built-in fuel filters.  There are clear sights for easy float adjustments, adjustable vacuum secondaries and four vacuum ports. Plus it has a million mile power valve, is 100% wet flow tested and includes fittings.

  • No Trouble quick change vacuum secondaries - up to 6% more acceleration or 5% better fuel economy with simple spring change (springs included) 
  • Vacuum secondaries allow use on wide variety of vehicles
  • Tuneable fuel metering system
  • Dual feed fuel inlet
  • 1 timed (spark) port, 2 full vacuum, and 1 PCV port
  • Ford A/T kickdown, does not work with A.O.D. transmissions
  • Calibrated for monster low-end torque, awesome acceleration, & unmatched top-end horsepower
  • Bolt on & go design
  • Electric choke

Charts

Rebates

Holley October Promo 10% Off Select Parts Sale

Holley October Promo 10% Off Select Parts SaleHolleyOctoberPromo10%OffSelectPartsSale

Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Holley 0-80770 Specifications

KEY SPECS
MFG. Part #0-80770
BrandHolley
Carburetor Barrels4-Barrel
Fuel TypeGasoline
Choke TypeElectric
CFM Range700-799 CFM
CFM770 CFM
Carburetor Flange Type4-Barrel Square Bore
FinishShiny
Material TypeAluminum
ColorSilver
Secondary TypeVacuum
Fuel Inlet TypeDual
Gasket(s) IncludedNo
New or RemanufacturedNew
Throttle Linkage TypeUniversal
Supercharged ApplicationNo
GENERAL
Boosterstraight
Bolt Hole Pattern5.160" x 5.625"
GTIN Code090127539118
Sold in QuantityEach

Ratings & Reviews

5

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Excellent customer service!! Great product!!

5.0

3 years ago

Chevelle Rebuild

Marion, Ohio

Verified

Appreciate- great customer service and great product, and quick delivery!

Would Recommend

Showing 1 of 1 reviews

Questions & Answers

3 Questions • 3 Answers

How would this carb match with a 70 dodge super bee 383HP motor otherwise stock? If not any other suggestions? I like the low/med end torque.

by Xpressway

• 11 years ago

1 answer

will it work on bbc 454 hi, i have a 0.30 over bored 454, aluminum oval port heads and oval port aluminum intake , planning on a mild roller cam and lifters, rockers, stock th350 trans , no racing will this be enough carb?

by fordthai1954

• 11 years ago

1 answer

I built a 383 stroker with 9.5 compression a comp solid lift cam with 520 lift an Elderbrock RPM intake it should make about 420 hp would this carb work well with that combo?

by

• 15 years ago

1 answer

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