{"product_id":"for-ls-cathedral-port-cylinder-head-to-rectangle-port-intake-manifold-adapters","title":"For LS Cathedral Port Cylinder Head to Rectangle Port Intake Manifold Adapters","description":"\u003ch2\u003eIntake Manifold Adapter for LS Cathedral Port Cylinder Head to Rectangle Port\u003c\/h2\u003e\u003cp\u003eThis adapter plate lets a rectangle port intake manifold bolt onto LS cathedral port cylinder heads, solving the mismatch between port shapes in a build.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis LS cathedral port to rectangle port intake manifold adapter is made for engine builders mixing cylinder heads and intakes from different LS generations. It bridges the port shape difference so an rectangular port manifold can sit on cathedral port heads without machine work. The adapter is a practical fix for anyone assembling a hybrid LS combination on a budget.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eConverts cathedral port cylinder head flanges to accept rectangle port intake manifolds\u003c\/li\u003e\n\u003cli\u003eAluminum construction for light weight and heat resistance\u003c\/li\u003e\n\u003cli\u003ePrecision bolt pattern to line up with LS head and intake bolt holes\u003c\/li\u003e\n\u003cli\u003ePort shaping that transitions between the two runner profiles\u003c\/li\u003e\n\u003cli\u003eSold as a pair for both banks of the engine\u003c\/li\u003e\n\u003cli\u003eGasket surface machined flat for a clean seal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor LS cathedral port cylinder heads\u003c\/li\u003e\n\u003cli\u003efor rectangle port intake manifolds\u003c\/li\u003e\n\u003cli\u003efor LS1 and LS6 style head castings\u003c\/li\u003e\n\u003cli\u003efor LS3 and L92 style intake manifolds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHybrid LS builds mixing heads and intakes from different generations\u003c\/li\u003e\n\u003cli\u003eBudget engine swaps where matching parts are not on hand\u003c\/li\u003e\n\u003cli\u003eRace car and truck engine assembly\u003c\/li\u003e\n\u003cli\u003eTest fitting intake options on a build stand\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHead Port Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLS cathedral port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntake Port Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangle port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this adapter fit any LS engine? \u003cstrong\u003eA:\u003c\/strong\u003e It is made for LS engines with cathedral port heads and rectangle port intake manifolds, not the reverse. Confirm both your head and intake port styles before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need special gaskets or bolts? \u003cstrong\u003eA:\u003c\/strong\u003e You will typically need gaskets on both sides of the adapter and longer intake bolts to account for the added thickness. Check clearance to the hood and fuel rails after install.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":50557106290774,"sku":"ZZ3P01865","price":153.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_91170942-7e5f-4654-aaba-a727ebf62037.jpg?v=1790972978","url":"https:\/\/www.solidspare.com\/products\/for-ls-cathedral-port-cylinder-head-to-rectangle-port-intake-manifold-adapters","provider":"Solid Spare","version":"1.0","type":"link"}