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HOLLEY 750 CFM SUPERCHARGER DOUBLE PUMPER carburettor-DRAW THRU DESIGN

HOLLEY 750 CFM SUPERCHARGER DOUBLE PUMPER carburettor-DRAW THRU DESIGN

Original price was: £1,603.09.Current price is: £1,522.93. Inc. VAT

SKU: HOL0-80573S Categories: , , Brand:

Description

Part Number: 0-80573S

Holley 750 CFM 4150 Supercharger Double Pumper Carburetor

Tumble Polished Finish with Boost-Referenced Power Valve Calibration

Key Features

  • ☑ 750 CFM airflow capacity calibrated specifically for forced induction draw-thru supercharger installations
  • ☑ Unique boost-referenced power valve senses intake manifold vacuum below the supercharger for precise load enrichment
  • ☑ Dual accelerator pumps deliver immediate fuel shot on initial throttle tip-in
  • ☑ Mechanical secondaries provide direct, linear throttle modulation for drag and performance street applications
  • ☑ Dual feed fuel inlets with 9-5/16″ spacing ensure high-volume, uninterrupted fuel supply
  • ☑ Tumble polished aluminum construction offers corrosion resistance and exceptional engine bay aesthetics
  • ☑ 4-corner idle system and manual cable-driven choke for ultimate cold-start and idle tuning control
  • ☑ 100% wet-flow tested by Holley technicians prior to dispatch

Technical Specifications

Brand Holley
Manufacturer Part Number 0-80573S
Carburetor Model 4150 Supercharger Double Pumper
Airflow Rating 750 CFM
Flange Type Square Bore 4-Barrel
Secondary Style Mechanical
Choke Type Manual (Cable Operated)
Fuel Inlets Dual (9-5/16″ distance)
Material & Finish Aluminum / Tumble Polished Silver
Primary / Secondary Jets 74 Primary / 84 Secondary
Booster Style Down Leg

What’s Included in the Box

  • 1x Holley 0-80573S 750 CFM Supercharger Double Pumper Carburetor
  • 1x Base Flange Mounting Gasket
  • 1x Air Cleaner Base Gasket
  • Carburetor Linkage & Vacuum Hose Accessories

Engineered for supercharged muscle cars, hot rods, and drag strip competitors, the Holley 0-80573S delivers uncompromising fuel delivery under forced induction. Supported directly in the UK by JP Racing, every unit comes backed by full technical support and fast express UK shipping.

Frequently Asked Questions

Standard carburetors measure manifold vacuum directly at the base plate. On draw-thru supercharger setups, base pressure reflects supercharger inlet conditions rather than true engine load. The Holley 0-80573S features a manifold boost-referenced power valve port designed to connect below the supercharger, ensuring accurate power valve operation and precise fuel enrichment when the engine encounters heavy load.

The 0-80573S utilizes a standard 4150 square bore flange bolt pattern, making it a direct bolt-on for standard 4150 supercharger top plates and intake manifolds. It features dual feed fuel inlets with standard 9-5/16" spacing, requiring a dual-feed fuel line assembly for installation.

Holley Double Pumper carburetors with mechanical secondaries are designed primarily for manual transmission vehicles or lightweight automatic vehicles equipped with a high-stall torque converter and low rear-end gear ratios. This configuration ensures the engine can instantly handle the fuel flow delivered by the mechanical secondary linkage and dual accelerator pumps.

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