{"product_id":"cathedral-port-single-plane-intake-manifold-for-gm-iii-ls1-ls2-rpm-3-500-8-000","title":"Cathedral Port Single Plane Intake Manifold For GM III LS1\/LS2 RPM 3,500-8,000","description":"\u003ch2\u003eSingle Plane Intake Manifold for GM LS1\/LS2\u003c\/h2\u003e\u003cp\u003eThis cathedral port single plane intake manifold for GM LS1 and LS2 engines is designed to support high-rpm airflow in the 3,500 to 8,000 RPM range.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis cathedral port single plane intake manifold for GM LS1 and LS2 engines routes air from the throttle body into the cylinder heads with a short, direct runner design aimed at upper-rpm power. The single plane layout favors sustained high-rpm breathing between 3,500 and 8,000 RPM, making it a fit for builds that spend time in the upper rev range. It suits engine builders and racers working with cathedral port LS heads who want a manifold matched to a performance cam and higher stall or manual transmission.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSingle plane runner design tuned for the 3,500 to 8,000 RPM power band\u003c\/li\u003e\n\u003cli\u003eCathedral port flange matches LS1 and LS2 cylinder head intake ports\u003c\/li\u003e\n\u003cli\u003eShort runner geometry reduces restriction at high airflow demand\u003c\/li\u003e\n\u003cli\u003eCast aluminum construction for strength and heat resistance\u003c\/li\u003e\n\u003cli\u003eDesigned as a direct fit for GM LS1 and LS2 intake mounting\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor GM LS1 engines\u003c\/li\u003e\n\u003cli\u003efor GM LS2 engines\u003c\/li\u003e\n\u003cli\u003efor cathedral port LS cylinder heads\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDrag and circuit builds chasing upper-rpm horsepower\u003c\/li\u003e\n\u003cli\u003eEngine swaps needing a compact single plane intake\u003c\/li\u003e\n\u003cli\u003eCam and cylinder head upgrades on cathedral port LS engines\u003c\/li\u003e\n\u003cli\u003eStreet and strip cars with manual or high-stall automatic transmissions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle plane intake manifold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePort Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCathedral port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGM LS1, LS2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRPM Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3,500 to 8,000\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 manifold work with a stock throttle body and fuel rail? \u003cstrong\u003eA:\u003c\/strong\u003e Throttle body and fuel rail compatibility depends on the specific accessory drive and injector setup, so verify mounting patterns and heights before ordering. Many builds pair a single plane like this with an aftermarket cable-driven throttle body.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does a single plane manifold hurt low-rpm torque? \u003cstrong\u003eA:\u003c\/strong\u003e A single plane trades some low-rpm torque for stronger upper-rpm breathing, so it works best with a cam and gearing matched to the 3,500 to 8,000 RPM range. Confirm the combination with your engine builder.\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":50987230888022,"sku":"ZZ3V00921","price":388.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_1f636593-7b7b-4737-99c0-ba46c7059f47.jpg?v=1793705633","url":"https:\/\/www.solidspare.com\/products\/cathedral-port-single-plane-intake-manifold-for-gm-iii-ls1-ls2-rpm-3-500-8-000","provider":"Solid Spare","version":"1.0","type":"link"}