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Holley Performance 0-80573S Supercharger Carburetor

Carburetor

Supercharger Carburetor

Supercharger Carburetor; 4 bbl; 750 cfm; Model 4150; Manual Choke; Gasoline; Dual Fuel Inlet; Mech. Secondary; Double Accelerator Pump; Shiny Finish;


SPECIFICATIONS:
  • Barrel: Four
  • Booster Type: Down Leg
  • Carburetor Type: 4150
  • CFM: 750
  • Choke: Manual
  • Emission: Without EGR
  • Finish: Shiny
  • Flange: Square Bore
  • Fuel Inlet: Dual
  • Fuel Type: Gasoline
  • Material: Zinc
  • Primary Main Jet: 74
  • Primary Power Valve: 10.5
  • Secondary Main Jet: 84
  • Secondary Pump Nozzle Size: 31
  • Secondary Type: Mechanical
  • Supercharged Application: Yes
  • Throttle Bore: 1.688 in.
  • Type: Automotive
  • Usage: Street/Strip
  • WARNING CA Proposition 65: Yes
  • WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FEATURES:
  • Tumble Polished Shiny Finish For Good Looks
  • Manual Choke For Precise Cold Start Control
  • Dual Accelerator Pumps For Add Fuel Under Initial Acceleration
  • Dual Feed Fuel Inlets For Constant High Volume Fuel Delivery
  • Mechanical Secondaries For Perfect Off The Line Launches
  • Lightweight Vehicles w/Auto Trans w/High Stall/Low Gearing
  • Boost Power Valve For Proper Enrichment Under Acceleration
  • 100% Wet Flow Tested By Holley Technicians
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These carburetors that are intended for use with superchargers, and 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. Without this external referencing, the power valve would be reading the Supercharger boost pressure, which has no bearing on the engine load.

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for fits GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.

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