{"product_id":"gm-ls3-l98-rectangle-port-hi-rise-efi-modular-intake-manifold-black","title":"GM LS3 L98 Rectangle Port Hi Rise EFI Modular Intake Manifold Black","description":"\u003cdiv\u003e\n\u003cp\u003eAeroflow Performance’s GM LS modular intake manifold in Black is engineered for the GM LS3\/L98 rectangle-port setup. This cast aluminium, hi-rise design offers a scalable, configurable solution for high-rpm power while remaining a practical choice for street or race applications. The modular base and top plate seal with an O-ring, delivering a robust, leak-free platform that can be tailored to your engine and fuel system needs.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eHi-rise design with long runners for high RPM horsepower on big‑cube LS engines; bonnet clearance will be required for the hi-rise option.\u003c\/li\u003e \u003cli\u003eRectangle port compatibility with a base that fits either cathedral port or rectangle port cylinder heads.\u003c\/li\u003e \u003cli\u003eTop plate features a short snout to accept a 102mm four‑bolt GM LS throttle body; compatible with 102mm\/105mm throttle bodies.\u003c\/li\u003e \u003cli\u003eShort 33mm (14mm) injector suitability—uses 14mm short-length injectors with 16 injector bosses (8 undrilled) for EFI setups.\u003c\/li\u003e \u003cli\u003eOverall height from the front snout is 300mm (check bonnet clearance).\u003c\/li\u003e \u003cli\u003e3\/8\" NPT port (x1) and 1\/8\" NPT port (x1) on the base, plus a rear LS-style map sensor provision.\u003c\/li\u003e \u003cli\u003eBurst panel welded into the top plate to vent pressure (up to 200 psi) in the event of a backfire, protecting the manifold.\u003c\/li\u003e \u003cli\u003eModular design: bottom base bolts to the cylinder heads and top plate bolts to the base with an O-ring seal; each base accommodates either cathedral or rectangle port heads.\u003c\/li\u003e \u003cli\u003eAvailable in natural cast or black powder coat finishes; this listing features the Black finish.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat’s included (EFI configuration)\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFuel Rail Kit (AF6999-6004)\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 UH L)\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 \u003cli\u003eIntake manIfold gasket O‑Ring (AF6999-1000)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePort size: 1.15\" x 2.50\"\u003c\/li\u003e \u003cli\u003eIntake manifold gasket O‑Ring: AF6999-1000\u003c\/li\u003e \u003cli\u003e3\/8\" NPT port (x1) and 1\/8\" NPT port (x1)\u003c\/li\u003e \u003cli\u003eRear LS-style map sensor provision\u003c\/li\u003e \u003cli\u003eOverall height from front snout: 300mm\u003c\/li\u003e \u003cli\u003eGasketed, o-ring sealed modular base\/top plate\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eDesign \u0026amp; performance considerations\u003c\/h3\u003e\n\u003cp\u003eThe Aeroflow Performance GM LS modular intake manifold couples a compact bottom base with a precision-machined top plate to deliver a sealed, tunable airflow path. Short runners with a tapered top promote increased air velocity and more uniform airflow to all eight cylinders, boosting throttle response. The long-runner hi-rise option is ideal for drag racing and high‑rpm applications, while the base features ports for LS map sensing and multiple NPT ports for ancillary sensors or fixtures. A cutaway burst panel on the top plate provides a safety vent for backfires, preserving component integrity under extreme conditions.\u003c\/p\u003e \u003ch3\u003eApplications \u0026amp; fitment\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned for GM LS3\/L98 rectangle-port engines with the option to run EFI or non‑EFI configurations (16 injector bosses total, 8 drilled in EFI, 8 undrilled).\u003c\/li\u003e \u003cli\u003eSuitable for installation with 102mm or 105mm throttle bodies and 14mm short-length injectors (approx. 33mm length).\u003c\/li\u003e \u003cli\u003eBonnet clearance considerations apply due to hi-rise design; verify fitment before installation.\u003c\/li\u003e \u003cli\u003eCompatible with either natural cast or black powder-coated finishes; this listing reflects the Black finish.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith its modular, scalable approach, this intake manifold provides a tailored path to higher performance on GM LS engines while maintaining a practical, installable solution for both street and competition use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":47266790146218,"sku":"AF6263-6001","price":1515.6,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7829\/4698\/files\/s-l1600_2_c4da444d-85b0-4049-a8ee-417950011a1b.webp?v=1753410912","url":"https:\/\/tgmperformance.com.au\/products\/gm-ls3-l98-rectangle-port-hi-rise-efi-modular-intake-manifold-black","provider":"TGM Performance Parts","version":"1.0","type":"link"}