{"product_id":"speedmaster-1-147-021-fits-chevy-bbc-454-midrise-air-oval-port-intake-manifold-black","title":"Speedmaster 1-147-021 Fits Chevy BBC 454 MidRise Air Oval Port Intake Manifold Black","description":"The Speedmaster MidRise Air design features the identical plenum and runner design as the normal MidRise. The main difference is that there is an open area under the plenum chamber. This feature is sometimes called an air gap design. The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine. This cooler air charge provides additional power and torque.\r\n\u003cul\u003e\t\u003cli\u003eOpen area under the plenum chamber \"air gap\" design.\u003c\/li\u003e\r\n\t\u003cli\u003eThe cooler air charge provides additional power.\u003c\/li\u003e\r\n\t\u003cli\u003eCast from steel molds for a tighter grain and reduction of porosity\u003c\/li\u003e\r\n\t\u003cli\u003ePressure tested to ensure maximum performance\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cb\u003eVehicle Specific\u003c\/b\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eChevrolet \/ Chevy Big Block\u003c\/li\u003e\r\n\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eAttributes:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eBrand Name: \u003c\/b\u003eSpeedmaster\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGTIN: \u003c\/b\u003e00840136560579\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eAdd-On: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eProduct Weight (lbs.): \u003c\/b\u003e20.83\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTLE: \u003c\/b\u003eSpeedmaster 1-147-021 Fits Chevy BBC 454 MidRise Air Oval Port Intake Manifold Black\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eExtended Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eCountry of Origin: \u003c\/b\u003eChina\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEmissions : \u003c\/b\u003eRacing or Pre-Emissions Use Only\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLife Cycle Status: \u003c\/b\u003eAvailable To Order\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003ePacking Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity of Each: \u003c\/b\u003e1\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePackage UOM: \u003c\/b\u003eEA\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDimension: \u003c\/b\u003e23.62 x 11.02 x 7.09 inches\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eWeight: \u003c\/b\u003e20 POUNDS\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003ePDF:\u003c\/h3\u003e\r\n\u003cp\u003e\r\n\u003c\/p\u003e\u003cdiv\u003e\u003ca href=\"https:\/\/sdda.semadata.org\/Standard\/Speedmaster\/Speedmaster-Support.pdf\" target=\"_blank\"\u003e\u003cimg src=\"data:image\/png;base64,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\" style=\"display:inline\"\u003e \u003c\/a\u003e\u003c\/div\u003e\r\n\r\n\u003cdiv id=\"sema-product-fitment\" class=\"product__accordion accordion fitment\"\u003e\u003c\/div\u003e","brand":"Speedmaster","offers":[{"title":"Default Title","offer_id":44244213170221,"sku":"FWGG-1-147-021","price":466.5,"currency_code":"USD","in_stock":true}],"url":"https:\/\/montgomeryparts.com\/products\/speedmaster-1-147-021-fits-chevy-bbc-454-midrise-air-oval-port-intake-manifold-black","provider":"Montgomery Parts","version":"1.0","type":"link"}