{"product_id":"intake-manifold-for-pontiac-gto-2005-2006-cathedral-port-black-w-fuel-rail-efi","title":"Intake Manifold for Pontiac GTO (2005-2006) Cathedral Port Black w\/Fuel Rail EFI","description":"\u003ch2\u003eHigh-Flow Aluminum Intake Manifold for 2005-2006 Pontiac GTO (LS2 \/ V2)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it is for:\u003c\/strong\u003e Replaces the restrictive factory composite intake manifold to maximize upper-RPM airflow and accommodate throttle body EFI or carbureted setups on cathedral port cylinder heads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GTO Composite Manifold Limitations\u003c\/h3\u003e\n\u003cp\u003eThe OEM plastic LS2 intake manifold is notorious among engine builders for structural limitations under boost and restrictive airflow distribution at higher RPMs. The factory composite material, while adequate for stock output, suffers from significant heat soak during sustained load and lacks the structural rigidity needed for high manifold pressures. Furthermore, the internal runner design chokes volumetric efficiency beyond 6,000 RPM, choking top-end breathing and limiting the true power potential of the 6.0L powerplant.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis single-plane aluminum intake manifold is engineered specifically for LS1, LS2, and LS6 cathedral port heads, completely eliminating the structural weaknesses of the factory plastic unit. Featuring a 4150 square bore carb base and optimized 2.50\" x 1.15\" port dimensions, this manifold delivers a broad, usable powerband from 2,500 to 7,000 RPM. The cast aluminum construction resists ballooning and handles extreme forced induction pressures without failure. Standing at a 5.417-inch intake height, it provides superior plenum volume for multi-port EFI configurations. The included high-flow fuel rails and complete mounting hardware ensure precise injector alignment and a reliable installation. Finished in a stealthy black coating, it resists chemical degradation in harsh engine bay environments. The direct-bolt fuel rails are machined to support high base fuel pressures, ensuring uniform delivery across all eight cylinders to prevent lean conditions during peak engine load.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2005-2006 Pontiac GTO\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eLS2 6.0L V8 \/ V2\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e400 hp \/ 400 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFor GM LS1 Engines (Cathedral Port)\u003c\/li\u003e\n  \u003cli\u003eFor GM LS2 Engines (Cathedral Port)\u003c\/li\u003e\n  \u003cli\u003eFor GM LS6 Engines (Cathedral Port)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Pontiac Muscle Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle the rigorous demands of large-displacement, high-horsepower applications, this manifold unlocks the aggressive top-end power and throttle response expected from American muscle, providing a rock-solid foundation for both naturally aspirated track cars and high-boost forced induction builds.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48204779684088,"sku":"DS-E776AHW23","price":289.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/intake-manifold-for-pontiac-gto-2005-2006-cathedral-port-black-w-fuel-rail-efi-1.webp?v=1775581379","url":"https:\/\/performancechiptuning.com\/products\/intake-manifold-for-pontiac-gto-2005-2006-cathedral-port-black-w-fuel-rail-efi","provider":"Performance Chip Tuning","version":"1.0","type":"link"}