{"product_id":"exhaust-header-for-pontiac-gto-2004-2006-5-7l-6-0l","title":"Exhaust Header for Pontiac GTO (2004-2006) 5.7L 6.0L","description":"\u003ch2\u003eHigh-Flow Stainless Exhaust Headers for 2004-2006 Pontiac GTO\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Stainless Exhaust Header replaces the restrictive factory cast iron manifolds on the 2004-2006 Pontiac GTO to optimize exhaust gas velocity, reduce cylinder backpressure, and accelerate scavenging.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Pontiac GTO Exhaust Manifold Bottleneck\u003c\/h3\u003e\n\u003cp\u003eFactory cast-iron log manifolds on the \u003cstrong\u003eV-Body\u003c\/strong\u003e platform severely restrict the high-displacement GM \u003cstrong\u003eLS1\u003c\/strong\u003e and \u003cstrong\u003eLS2\u003c\/strong\u003e powerplants. Engineered with unequal runner lengths, sharp casting transitions, and choked collector openings, the OEM manifolds cause uneven thermal expansion and generate turbulent backpressure. This restriction traps spent combustion gases inside the combustion chambers, elevating exhaust gas temperatures (EGTs) and choking mid-to-high RPM volumetric efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered for direct-fit replacement, this stainless steel header assembly incorporates mandrel-bent primary runners that ensure smooth, uninhibited exhaust gas velocity. Precision TIG-welded joints and thick, laser-cut mounting flanges eliminate thermal distortion and exhaust leaks under high heat cycles. The optimized merge collector promotes inertial pulse scavenging, reducing pumping losses and maximizing cylinder evacuation across both 5.7L and 6.0L small-block configurations.\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; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2004-2006 Pontiac GTO\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eLS1\u003c\/strong\u003e (5.7L), \u003cstrong\u003eLS2\u003c\/strong\u003e (6.0L) \/ \u003cstrong\u003eV-Body\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e350-400 hp \/ 365-400 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eSPT-EHD1414 \/ Factory Manifolds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2004 Pontiac GTO 5.7L V8 (LS1)\u003c\/li\u003e\n  \u003cli\u003e2005 Pontiac GTO 6.0L V8 (LS2)\u003c\/li\u003e\n  \u003cli\u003e2006 Pontiac GTO 6.0L V8 (LS2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the V-Body GTO?\u003c\/strong\u003e\u003cbr\u003e Yes, this header assembly is engineered specifically as a direct-fit bolt-on for the 2004-2006 Pontiac GTO \u003cstrong\u003eV-Body\u003c\/strong\u003e equipped with \u003cstrong\u003eLS1\u003c\/strong\u003e or \u003cstrong\u003eLS2\u003c\/strong\u003e engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre O2 sensor harness extensions needed for installation?\u003c\/strong\u003e\u003cbr\u003e Factory sensor locations are preserved via integrated bungs, but sensor harness extensions may be required depending on your specific secondary catalytic converter and mid-pipe layout.\u003c\/p\u003e\n\n\u003ch3\u003eThe Pontiac Muscle Caliber\u003c\/h3\u003e\n\u003cp\u003ePushrod GM V8s depend on unrestricted exhaust flow to deliver true muscle-car output and a clean, deep acoustic tone. Replacing choked cast factory manifolds with stainless mandrel-bent tubular headers guarantees optimal flow dynamics and long-term corrosion resistance on the street or track.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50607431221496,"sku":"DS-EUTPL8FFB","price":252.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-header-for-pontiac-gto-2004-2006-5-7l-6-0l-1.jpg?v=1790091229","url":"https:\/\/performancechiptuning.com\/fr\/products\/exhaust-header-for-pontiac-gto-2004-2006-5-7l-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}