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Holley Performance 0-80576S Supercharger Carburetor

Carburetor

Supercharger Carburetor

Supercharger Carburetor; 4 bbl; 750 cfm; 2 Circuit Metering; Model 4150HP; Mech Secondary; Double Accelerator Pump; No Choke; Gas; Dual Fuel Inlet; Gold Dichromate Finish;


SPECIFICATIONS:
  • Barrel: Four
  • Booster Type: Down Leg
  • Carburetor Type: 4150
  • CFM: 750
  • Choke: None
  • Circuit: 2
  • Emission: Without EGR
  • Finish: Gold Dichromate
  • Flange: Square Bore
  • Fuel Inlet: Dual
  • Fuel Type: Gasoline
  • Material: Zinc
  • Primary Main Jet: 76
  • Primary Power Valve: 10.5
  • Secondary Main Jet: 87
  • Secondary Pump Nozzle Size: 31
  • Secondary Type: Mechanical
  • Supercharged Application: Yes
  • Throttle Bore: 1.688 in.
  • Type: Automotive
  • Usage: Street/Strip
  • Venturii Size: 1.375 in.
  • 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
  • Contoured Venturi Inlet Balances Airflow For Increased hp
  • Screw In Air Bleeds For Precision Tuning Capabilities
  • Dual 30cc Accelerator Pumps
  • Dual Feed Fuel Inlets For Constant High Volume Fuel Delivery
  • Mechanical Secondaries For Perfect Off The Line Launches
  • 4 Corner Idle Allows You To Precisely Control Your Idle System
  • Boost Referenced Power Valve For Enrichment Under Acceleration
  • Thro

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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