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Holley 0-80576SA Supercharger XP Carburetor, Draw Thru

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#425080576SA

Holley 0-80576SA Supercharger XP Carburetor, Draw Thru

Designed for use on the WEIAND® 671 supercharger (big block Chevrolet/Chrysler 392) or WEIAND® 871 supercharger (small block Chevrolet/Chrysler 426)
Screw in air bleeds for precision tuning capabilities
Dual 30cc accelerator pumps for additional fuel under initial acceleration Mechanically Locked

$1,013.95

Factory Shipped

$1,126.95

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Product Summary

4-Barrel Carburetor Barrels, Gasoline Fuel Type, Shiny

Designed for use on the WEIAND® 671 supercharger (big block Chevrolet/Chrysler 392) or WEIAND® 871 supercharger (small block Chevrolet/Chrysler 426)
Screw in air bleeds for precision tuning capabilities
Dual 30cc accelerator pumps for additional fuel under initial acceleration Mechanically Locked
Dual feed fuel inlets for constant high volume fuel delivery
4 corner idle allows you to precisely control your idle system

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Key Specs

Carburetor Barrels	4-Barrel
Fuel Type	Gasoline
Choke Type	No Choke
CFM Range	600-699 CFM
CFM	650 CFM

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Holley 0-80576SA Details

By popular demand, Holley is expanding the draw-thru supercharger carburetor line to now include the XP series. Like the existing HP line, these are available in 600, 750, and 950 CFM flow rates and standard polished with black accents. The feature-laden XP includes a contoured venturi inlet for balanced air flow, screw in air bleeds for precision tuning capabilities, high flow billet metering blocks, billet base plate, and Dominator style fuel bowls which allow plumbing from either side. Supercharger XP carburetors also have a unique capability that allows their power valves to reference the intake manifold vacuum below the supercharger. This allows the power valve to operate as it should, based off intake manifold vacuum. A power valve provides further enrichment to the main metering system under load (low vacuum) conditions. Holley XP carburetors are the standard for square bore race carburetors. Race-Ready out of the box!

Features:

Tumble polished shiny finish for good looks
Designed for use on the WEIAND® 671 supercharger (big block Chevrolet/Chrysler 392) or WEIAND® 871 supercharger (small block Chevrolet/Chrysler 426)
Contoured venturri inlet offers balanced airflow for increased horsepower
Screw in air bleeds for precision tuning capabilities
Dual 30cc accelerator pumps for additional fuel under initial acceleration
Dual feed fuel inlets for constant high volume fuel delivery
4 corner idle allows you to precisely control your idle system
Mechanical Secondaries for perfect off the line launches
Boost referenced power valve for proper enrichment under acceleration
Throttle lever cut off for clearance on a sideways application
100% wet-flow tested by Holley technicians to assure it arrives ready to run!

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Holley October Promo 10% Off Select Parts Sale

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.

Guides & Documents

Carburetors Installation Instructions (425080576SA)

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California 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.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Holley 0-80576SA Specifications

KEY SPECS
MFG. Part #	0-80576SA
Brand	Holley
Carburetor Barrels	4-Barrel
Fuel Type	Gasoline
Choke Type	No Choke
CFM Range	600-699 CFM
CFM	650 CFM
Carburetor Flange Type	4-Barrel Square Bore
Finish	Shiny
Material Type	Aluminum
Color	Silver
Secondary Type	Mechanical
Fuel Inlet Type	Dual
Gasket(s) Included	Yes
New or Remanufactured	New
Throttle Linkage Type	Universal
Supercharged Application	Yes

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