{"product_id":"750-cfm-supercharger-double-pumper-carburetor-draw-thru-design-0-80573s","title":"750 CFM Supercharger Double Pumper Carburetor-Draw Thru Design - 0-80573S","description":"\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\r\n\r\n\u003cp\u003eHolley 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.\u003cbr\u003e\r\n \u003c\/p\u003e\r\n\r\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eTumble polished shiny finish for good looks\u003c\/li\u003e\r\n\t\u003cli\u003eSmall block Chevrolet 1x4, 170 series blower calibration\u003c\/li\u003e\r\n\t\u003cli\u003eManual (Cable driven, hand operated) choke for precise cold start control\u003c\/li\u003e\r\n\t\u003cli\u003eDual accelerator pumps for addition fuel under initial acceleration\u003c\/li\u003e\r\n\t\u003cli\u003eDual feed fuel inlets for constant high volume fuel delivery\u003c\/li\u003e\r\n\t\u003cli\u003eMechanical Secondaries for perfect off the line launches\u003c\/li\u003e\r\n\t\u003cli\u003e4 corner idle allows you to precisely control your idle system\u003c\/li\u003e\r\n\t\u003cli\u003eIntended for lightweight vehicles w\/ manual trans or automatics with high stall \u0026amp; low gearing\u003c\/li\u003e\r\n\t\u003cli\u003eBoost referenced power valve for proper enrichment under acceleration\u003c\/li\u003e\r\n\t\u003cli\u003e100% wet-flow tested by Holley technicians to assure it arrives ready to run!\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch3\u003eApplication:\u003c\/h3\u003e\r\n\r\n\u003ctable\u003e\r\n\t\u003ctbody\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003e\u003cstrong\u003eYear\u003c\/strong\u003e\u003c\/th\u003e\r\n\t\t\t\u003cth\u003e\u003cstrong\u003eMake\u003c\/strong\u003e\u003c\/th\u003e\r\n\t\t\t\u003cth\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\r\n\t\t\t\u003cth\u003e\u003cstrong\u003eSubmodel\u003c\/strong\u003e\u003c\/th\u003e\r\n\t\t\t\u003cth\u003e\u003cstrong\u003eEngine Size\u003c\/strong\u003e\u003c\/th\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd\u003eUniversal\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch3\u003eSpecs:\u003c\/h3\u003e\r\n\r\n\u003ctable\u003e\r\n\t\u003ctbody\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eBarrels\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e4\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eBooster\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eDown Leg\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eBrand\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eHolley\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eCarburetor Use\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003ePerformance and Race\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eCFM\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e750\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eChoke\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eManual\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eCondition\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eNew\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eEmission Code\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e3\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eFinish\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eShiny\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eFuel\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eGasoline\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eFuel Inlet\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eDual\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eMarine Use\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eNo\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eMaterial\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eAluminum\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eModel\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e4150\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003ePrimary Main Jet\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e74\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003ePrimary Power Valve\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e10.5\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003ePrimary Pump Nozzle Size\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e28\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eProduct Type\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e4150 Model Carburetor\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eSecondaries\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eMechanical\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eSecondary Main Jet\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e84\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eSecondary Pump Nozzle Size\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e31\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eSupercharged Application\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eYes\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eSystem Type\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eDraw Thru\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eThrottle Bore\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003e1.688 inch\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eWarning\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eCalifornia Proposition 65\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003cth\u003eWarranty\u003c\/th\u003e\r\n\t\t\t\u003ctd\u003eLimited 90 Day\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/tbody\u003e\r\n\u003c\/table\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":32586650124337,"sku":"0-80573S","price":999.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2493\/0960\/files\/750-cfm-supercharger-double-pumper-carburetor-draw-thru-design-0-80573s-modern-day-muffler-1.jpg?v=1738925674","url":"https:\/\/moderndaymuffler.com\/products\/750-cfm-supercharger-double-pumper-carburetor-draw-thru-design-0-80573s","provider":"Modern Day Muffler","version":"1.0","type":"link"}