{"product_id":"ls1-cathedral-port-carburettor-street-single-plane-intake-manifold","title":"LS1 Cathedral Port Carburettor Street Single Plane Intake Manifold","description":"\u003cdiv\u003e\n\u003cp\u003eTransform your GM LS cathedral-port engine from EFI to a dependable non-EFI carb setup with Aeroflow Performance’s Street low-rise, cast intake manifold. Built for street and light-track use, this single-plane design delivers steady, even air and fuel flow into the engine’s cathedral-port LS1\/LS2 heads for reliable power delivery across the RPM band.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4150 square-bore carburetor pad (4160 flange) compatible with aftermarket 4-barrel carburetors, with both manual and electric choke options available on today’s market\u003c\/li\u003e\n\u003cli\u003eFits GM LS1\/LS2 cathedral-port engines; designed specifically for non-EFI applications and retro-fit conversions\u003c\/li\u003e\n\u003cli\u003eSingle-plane configuration focused on high-RPM performance and steady intake air\/fuel flow\u003c\/li\u003e\n\u003cli\u003eNatural cast finish for a rugged, traditional appearance under the hood\u003c\/li\u003e\n\u003cli\u003eRPM operating range: 2500 to 7000 for versatile street and performance scenarios\u003c\/li\u003e\n\u003cli\u003eOverall height from carb pad to bottom of manifold: 122 mm (bonnet clearance should be checked)\u003c\/li\u003e\n\u003cli\u003ePort size: 0.95\" x 2.45\"\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCarburetor pad: square bore 4150 flange\u003c\/li\u003e\n\u003cli\u003eGasket O-Ring: AF6233-5002\u003c\/li\u003e\n\u003cli\u003eCarburetor studs: 5\/16-18\" (x4)\u003c\/li\u003e\n\u003cli\u003ePort plug: 3\/8\" NPT (x1)\u003c\/li\u003e\n\u003cli\u003eMounting holes: six 5\/16-18\"\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat’s included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8 x Intake Manifold O-Ring Gaskets (AF6233-5002)\u003c\/li\u003e\n\u003cli\u003e4 x M6 x 1.00 mm hex screws (80 mm overall height engagement)\u003c\/li\u003e\n\u003cli\u003e6 x M6 x 1.00 mm hex screws (50 mm engagement)\u003c\/li\u003e\n\u003cli\u003e10 x M6 flat washers\u003c\/li\u003e\n\u003cli\u003e1 x 3\/8\" NPT steel port plug\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eConvert your GM LS engine to a non-EFI carburettor setup with confidence using this Aeroflow Performance Street low-rise cast intake manifold. It’s purpose-built to support LS Gen III and IV platforms equipped with OE or aftermarket LS1\/LS2 cathedral-port cylinder heads, delivering a practical, high-performance upgrade without the complexity of EFI.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":47273345745066,"sku":"AF6040-5000","price":498.4,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7829\/4698\/files\/s-l1600_73707893-ae4b-43fc-894d-f3606ba9ae5c.webp?v=1753662991","url":"https:\/\/tgmperformance.com.au\/products\/ls1-cathedral-port-carburettor-street-single-plane-intake-manifold","provider":"TGM Performance Parts","version":"1.0","type":"link"}