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Holley

Holley 0-80573S 750 CFM Double Pumper Supercharger Blower 4 Barrel Carburetor

Holley 0-80573S 750 CFM Double Pumper Supercharger Blower 4 Barrel Carburetor

Regular price $908.95 USD
Regular price Sale price $908.95 USD
Sale Sold out
Holley Part Number 0-80573S


Holley Double Pumper® carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors. From their roots as the premier carburetor on many factory muscle cars to powering thousands of vehicles across the finish line, the Double Pumper is a great choice whether you are burning up the street or the quarter mile. The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall and low rear end gears. The Supercharger Double Pumper with a tumble polished shiny finish and features dual accelerator pumps for additional fuel under initial acceleration; mechanical secondaries for great performance; dual feed fuel inlets for constant high volume fuel delivery and a manual choke for easy control of engine warm up. 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 vacuum, which has no bearing on the engine load.

Features:

  • Tumble polished shiny finish for good looks
  • Small block Chevrolet 1x4, 170 series blower calibration
  • Manual (Cable driven, hand operated) choke for precise cold start control
  • Dual accelerator pumps for addition fuel under initial acceleration
  • 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
  • Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing
  • Boost referenced power valve for proper enrichment under acceleration
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
  • Please contact before ordering if you are not 100% sure of fitment
Barrels 4
Booster Down Leg
Brand Holley
Carburetor Use Performance and Race
CFM 750
Choke Manual
Condition New
Emission Code 3
Finish Shiny
Fuel Gasoline
Fuel Inlet Dual
Marine Use No
Material Zinc
Model 4150
Primary Main Jet 74
Primary Power Valve 10.5
Primary Pump Nozzle Size 28
Product Type 4150 Model Carburetor
Secondaries Mechanical
Secondary Main Jet 84
Secondary Pump Nozzle Size 31
Supercharged Application Yes
Throttle Bore 1.688 inch
Warranty Limited 90 Day
Part Number 0-80573S
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