{"product_id":"holley-ultra-lo-ram-intake-manifold-cast-ls1-cathedral-port-single-injector-300-621","title":"Holley ULTRA Lo-Ram Intake Manifold - Cast - LS1 Cathedral Port Single Injector 300-621","description":"\u003cdiv class=\"collapsible-title\"\u003e\n\u003cdiv class=\"full_description\"\u003e\u003cstrong\u003eOVERVIEW:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"full_description\"\u003eThe 300-621 Lo-Ram plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines. The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors. The Holley LS1\/2\/6 Ultra Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1\/2\/6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Ultra Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul class=\"productpage_list\"\u003e\n\u003cli\u003eDesigned for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.\u003c\/li\u003e\n\u003cli\u003eFront entry plenum flange allows design \u0026amp; fabrication of special throttle body adapters or inlet ducts for custom installations. 105MM Throttle Body Opening.\u003c\/li\u003e\n\u003cli\u003eNo burst panel, solid cast\u003c\/li\u003e\n\u003cli\u003eIntake design facilitates custom inlet duct and throttle body placement\u003c\/li\u003e\n\u003cli\u003eHigh volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)\u003c\/li\u003e\n\u003cli\u003eWith forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used\u003c\/li\u003e\n\u003cli\u003eClears 4th Gen Camaro and C5 Corvette cowls and hoods without modification\u003c\/li\u003e\n\u003cli\u003eLow height to fit under a stock or mildly modified hood in the front configuration\u003c\/li\u003e\n\u003cli\u003eModular design allowing the use of front-feed plenum entry\u003c\/li\u003e\n\u003cli\u003eDesigned for GM LS Gen III and IV engines equipped with GM LS1\/2\/6 (cathedral port) cylinder heads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Holley","offers":[{"title":"Raw Cast Aluminum","offer_id":67056713400691,"sku":"300-621","price":629.95,"currency_code":"USD","in_stock":true},{"title":"Black Powdercoated","offer_id":67056713433459,"sku":"300-621BK","price":1099.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0044\/6958\/8061\/files\/300-621UltraLoRamCathedralSatin1.jpg?v=1791379888","url":"https:\/\/protouringstore.com\/products\/holley-ultra-lo-ram-intake-manifold-cast-ls1-cathedral-port-single-injector-300-621","provider":"Pro Touring Store","version":"1.0","type":"link"}