{"product_id":"gm-ls-cathedral-port-efi-single-plane-aluminum-intake-manifold-black","title":"GM LS Cathedral Port EFI Single Plane Aluminum Intake Manifold - Black","description":"\u003cp\u003e\u003cspan\u003eUpgrade your LS-powered build with the Top Street Performance GM LS Cathedral-Port EFI Single Plane Aluminum Intake Manifold. Designed for Chevrolet LS cathedral-port engines, this high-performance EFI intake manifold delivers increased airflow, improved throttle response, and enhanced performance potential for street performance, LS swaps, drag racing, and street\/strip applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEngineered with a single-plane runner design, this LS intake manifold is built to support increased airflow demands compared to many factory-style intake systems. The large plenum and performance-oriented runner configuration help maximize airflow efficiency, making it an excellent choice for naturally aspirated and boosted LS engine combinations seeking improved induction performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eConstructed from lightweight black aluminum, this EFI intake manifold provides excellent durability, corrosion resistance, and a clean performance appearance. Included fuel rails simplify installation and support modern electronic fuel injection systems, making this manifold a substantial upgrade for performance-minded enthusiasts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned to fit a wide range of Chevrolet LS cathedral-port engines, including LS1, LS6, LS2, LM7, L59, LM4, L33, LH6, LC9, LH8, LQ4, LQ9, L98, and other compatible cathedral-port applications, this intake manifold is ideal for performance street vehicles, muscle cars, trucks, SUVs, and custom LS swap projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhether you're upgrading an LS1-powered Camaro, LS6 Corvette, LS2 GTO, LM7 Silverado, LC9 Tahoe, or LQ9 performance truck build, this black aluminum intake manifold delivers the airflow capacity, EFI compatibility, and performance-focused design serious LS enthusiasts demand.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSingle Plane Intake Manifold Technology\u003c\/strong\u003e\u003cbr\u003eThe Top Street Performance LS Cathedral-Port EFI Single Plane Intake Manifold is engineered for enthusiasts seeking increased airflow and improved engine performance. Its single-plane design utilizes a common plenum layout that promotes stronger airflow and increased power production at higher RPM levels. Lightweight polished aluminum construction provides durability while maintaining a professional performance appearance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Benefits\u003c\/strong\u003e\u003cbr\u003eThe single-plane intake design is engineered to support increased airflow and improved throttle response compared to many factory-style intake manifolds. Its large plenum and performance-oriented runner design help maximize airflow efficiency, making it an excellent choice for street performance vehicles, LS swaps, naturally aspirated combinations, and boosted engine builds seeking improved induction performance.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBLE WITH\u003c\/strong\u003e\u003cbr\u003eCHEVROLET LS CATHEDRAL-PORT ENGINES\u003cbr\u003e• 4.8L \/ 293 in³ (LR4, LY2)\u003cbr\u003e• 5.3L \/ 325 in³ (LM7, L59, LM4, L33, LH6, LC9, LH8)\u003cbr\u003e• 5.7L \/ 346 in³ (LS1, LS6)\u003cbr\u003e• 6.0L \/ 364 in³ (LQ4, LQ9, L98, LS2, LY6*, L76*)\u003cbr\u003e*Cathedral-port applications only\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMMON VEHICLE APPLICATIONS\u003c\/strong\u003e\u003cbr\u003e• Chevrolet Silverado\u003cbr\u003e• GMC Sierra\u003cbr\u003e• Chevrolet Camaro\u003cbr\u003e• Chevrolet Corvette\u003cbr\u003e• Chevrolet Tahoe\u003cbr\u003e• Chevrolet Suburban\u003cbr\u003e• GMC Yukon\u003cbr\u003e• Chevrolet Avalanche\u003cbr\u003e• Escalade\u003cbr\u003e• Pontiac GTO\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTES\u003c\/strong\u003e\u003cbr\u003e• Fits Chevrolet LS cathedral-port engines only\u003cbr\u003e• Single-plane intake manifold design\u003cbr\u003e• Designed for electronic fuel injection systems\u003cbr\u003e• Fuel rails included\u003cbr\u003e• Verify injector, throttle body, fuel system, and hood clearance before installation\u003cbr\u003e• Not compatible with LS3, L92, L99, LS7, LS9, LSA, or Gen V LT cylinder heads\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cb\u003eSPECIFICATIONS:\u003c\/b\u003e\u003cbr\u003eBasic Operating RPM Range: 2,500-7,000 RPM\u003cbr\u003eCarburetor Flange Style: 4150 Square Bore\u003cbr\u003eCarburetor Quantity: 1\u003cbr\u003eCenter Maximum Height: 5.417 in.\u003cbr\u003eColor: Polished\u003cbr\u003eDeck Height: Standard\u003cbr\u003eEGR Port: No\u003cbr\u003eFront Maximum Height: 5.417 in.\u003cbr\u003eFuel Injection Style: Multi-port Fuel Injection\u003cbr\u003eFuel Injector Stye Provision: EV1\u003cbr\u003eFuel Rail Color: Black\u003cbr\u003eFuel Rail Fitting Thread Diameter: -8 AN\u003cbr\u003eFuel Rail Material: Aluminum\u003cbr\u003eFuel Rails Included: Yes\u003cbr\u003eFuel System Type: Electronic Fuel Injection\u003cbr\u003eGasket Or Seal Included: Yes\u003cbr\u003eGrade Type: Performance\u003cbr\u003eIntake Port Shape: Cathedral\u003cbr\u003eMaterial: Aluminum\u003cbr\u003eMounting Hardware Included: Yes\u003cbr\u003eMounting Hole Quantity: 10\u003cbr\u003eRear Maximum Height: 5.417 in.\u003cbr\u003eSingle Or Dual Plane Type: Single Plane\u003c\/p\u003e","brand":"Top Street Performance","offers":[{"title":"Default Title","offer_id":49970047648040,"sku":"81137BK","price":513.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/8356\/5608\/files\/81137BK_01_38948638-5af8-465d-84ab-bbdde96c4f60.jpg?v=1740688270","url":"https:\/\/www.topstreetperformance.com\/products\/gm-ls-cathedral-port-efi-single-plane-aluminum-intake-manifold-black","provider":"Top Street Performance","version":"1.0","type":"link"}