Holley's Xp series carburetor is the draw-thru supercharger version of the popular HP line, featuring a contoured venturi inlet, screw-in air bleeds, billet metering blocks, and a billet base plate. A unique boost-referenced power valve draws off intake manifold vacuum below the supercharger for proper enrichment under load, calibrated here for a Chevrolet small block 2x4, 671-blower setup.
Specifications:
- CFM: 600
- Model: Xp-Series
- Secondaries: Mechanical
- Fuel Inlet: Dual feed
- Finish: Shiny/polished
- Material: Aluminum
- System Type: Draw-thru
- Supercharged Application: Yes
- Primary/Secondary Main Jet: 74
- Primary/Secondary Power Valve: 10.5
- Throttle Bore: 1.563 inch
- Venturi Size: 1.250 inch
- Part Number: 0-80575SA
Features dual 50cc accelerator pumps, 4-corner idle control, mechanical secondaries, and a throttle lever cutoff for clearance on sideways-mounted applications.
FAQ
What type of supercharger application is the 0-80575SA calibrated for?
A Chevrolet small block 2x4, 671-blower draw-thru supercharger setup.
How does the power valve work on a draw-thru supercharger carburetor?
It's boost-referenced, drawing off intake manifold vacuum below the supercharger so the power valve operates correctly under load.
What type of secondaries does this carburetor use?
Mechanical secondaries.
Why does it have a throttle lever cutoff?
To provide clearance when the carburetor is mounted sideways in a draw-thru supercharger application.
