{"product_id":"gm-ls3-l98-rectangle-port-low-rise-efi-modular-intake-manifold-black","title":"GM LS3 L98 Rectangle Port Low Rise EFI Modular Intake Manifold Black","description":"\u003cdiv\u003e\n\u003ch2\u003eGM LS3 L98 Rectangle Port Low Rise EFI Modular Intake Manifold - Black\u003c\/h2\u003e\n\u003cp\u003eEngineered for serious performance from the GM LS family, this rectangle port, low‑rise modular intake manifold blends precision casting with practical streetability. Finished in a durable black coating, it’s designed to maximize air delivery while fitting under most stock bonnets. It’s ideal for combinations using 102mm\/105mm throttle bodies and 14mm short injectors, delivering a balance of high‑RPM capability and responsive throttle feel for street or strip use.\u003c\/p\u003e \u003ch3\u003eWhy choose this modular design?\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eModular construction: bottom base bolts to the cylinder heads and top plate seals with an O‑ring, allowing easy disassembly and customization for different applications.\u003c\/li\u003e \u003cli\u003eUniversal compatibility: bases fit either cathedral port or rectangle port heads, with 16 injector bosses (8 undrilled) to accommodate EFI configurations and 14mm short injectors.\u003c\/li\u003e \u003cli\u003eThrottle body versatility: top plate features a short snout that accepts a 102mm 4‑bolt GM LS throttle body, enabling straightforward upgrades to larger throttle bodies as your build evolves.\u003c\/li\u003e \u003cli\u003eRace‑proved airflow: short runners with a tapered top increase air velocity and promote even airflow distribution across all eight cylinders for improved throttle response and power delivery.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey features and specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFinish: Black powder coated (also available in natural cast in the broader lineup)\u003c\/li\u003e \u003cli\u003eIntake port type: Rectangle port compatible\u003c\/li\u003e \u003cli\u003ePort size: 1.15\" x 2.50\"\u003c\/li\u003e \u003cli\u003eOverall height (front snout): 225mm (check bonnet clearance)\u003c\/li\u003e \u003cli\u003eGM LS throttle body pattern on snout: 4‑bolt\u003c\/li\u003e \u003cli\u003eGasket\/ports: Intake manifold gasket O‑Ring (AF6999-1000); 3\/8\" NPT port (x1); 1\/8\" NPT port (x1); rear LS style map sensor provision\u003c\/li\u003e \u003cli\u003eCompatibility: suited for 102mm\/105mm throttle body and 14mm short injectors (33mm length)\u003c\/li\u003e \u003cli\u003eFuel rails and cross over: designed to be EFI with 16 injector bosses (8 undrilled), complete with fuel rails and cross over\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIncluded components\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFuel Rail Kit (AF6999-6003)\u003c\/li\u003e \u003cli\u003e8 x Intake Manifold O‑Ring Gaskets (AF6233-5002)\u003c\/li\u003e \u003cli\u003e8 x M6 x 1.00mm hex screws (45mm UHL)\u003c\/li\u003e \u003cli\u003e8 x M6 flat washers\u003c\/li\u003e \u003cli\u003e1 x 3\/8\" NPT steel port plug\u003c\/li\u003e \u003cli\u003e1 x 1\/8\" NPT steel port plug\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePerformance and reliability\u003c\/h3\u003e\n\u003cp\u003eThe Aeroflow Performance GM LS modular intake manifold delivers a robust, lightweight aluminum design that supports high rpm and big‑cubic‑inch builds. The low‑rise geometry helps you fit under a stock hood, making it an ideal choice for street cars that still demand race‑level breathing. A welded burst panel on the top plate provides a 200 psi pressure relief in the event of a backfire, protecting the manifold and downstream components.\u003c\/p\u003e \u003ch3\u003eApplications and fitment notes\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned to suit GM LS engines with rectangle port heads; base plates accommodate cathedral or rectangle ports.\u003c\/li\u003e \u003cli\u003eBottom base anchors to the cylinder heads, top plate assembly encloses the runners with a sealed O‑ring interface for reliable sealing.\u003c\/li\u003e \u003cli\u003eBonnet clearance is a key consideration; verify 225mm height from the front snout before installation to ensure compatibility with your vehicle’s hood line.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":47266812068010,"sku":"AF6263-6000","price":1438.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7829\/4698\/files\/s-l1600_87788809-3135-475f-a185-8bb8d292e6a0.webp?v=1753411458","url":"https:\/\/tgmperformance.com.au\/products\/gm-ls3-l98-rectangle-port-low-rise-efi-modular-intake-manifold-black","provider":"TGM Performance Parts","version":"1.0","type":"link"}