{"product_id":"exhaust-header-for-ford-mustang-1974-1977-5-0l","title":"Exhaust Header for Ford Mustang (1974-1977) 5.0L","description":"\u003ch2\u003eHigh-Flow Stainless Steel Exhaust Header for 1974-1977 Ford Mustang\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Exhaust Header replaces restrictive factory log manifolds on the 1974-1977 Ford Mustang to reduce backpressure, accelerate exhaust gas velocity, and optimize cylinder scavenging.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Mustang Restrictive Log Manifold Choke Point\u003c\/h3\u003e\n\u003cp\u003eThe factory cast-iron exhaust manifolds on the \u003cstrong\u003eMustang II\u003c\/strong\u003e equipped with the \u003cstrong\u003eWindsor 302 (5.0L) V8\u003c\/strong\u003e are notoriously constrained by an extremely tight engine bay. The OEM log design forces exhaust pulses from adjacent cylinders to collide in sharp, 90-degree internal runners, creating severe reversion and high thermal retention. Over decades of heat cycles, these heavy cast units commonly develop hairline stress fractures, warp at the cylinder head mating surface, and blow out gaskets while choking engine volumetric efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically to overcome cramped engine bay clearances, this manifold kit utilizes CNC mandrel-bent \u003cstrong\u003estainless steel\u003c\/strong\u003e primary tubing routed to maintain balanced exhaust gas velocity. Smooth merge collectors streamline pulse scavenging, significantly lowering exhaust gas temperatures and mitigating heat soak. Heavy-duty, precision-machined flanges resist warpage under sustained thermal stress, while robust TIG welding prevents leaks. Pre-welded mounting locations deliver a reliable, direct-fit upgrade over restrictive OEM hardware without interfering with the steering shaft or crossmember.\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;\"\u003e1974-1977 Ford Mustang\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;\"\u003eWindsor 302 (5.0L) \/ Mustang II\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;\"\u003e139 hp \/ 250 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;\"\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\u003e1974-1977 Ford Mustang II Base 5.0L (302 cid) V8\u003c\/li\u003e\n  \u003cli\u003e1974-1977 Ford Mustang II Ghia 5.0L (302 cid) V8\u003c\/li\u003e\n  \u003cli\u003e1974-1977 Ford Mustang II Mach 1 5.0L (302 cid) V8\u003c\/li\u003e\n  \u003cli\u003e1976-1977 Ford Mustang II Cobra II 5.0L (302 cid) V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the Mustang II Mustang?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1974-1977 Ford Mustang equipped with the Windsor 302 (5.0L) engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre aftermarket gaskets or modifications required for installation?\u003c\/strong\u003e\u003cbr\u003e The assembly installs with the included hardware and gaskets, though verifying clearance around steering linkage and starter wiring is recommended prior to final torquing.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Muscle Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt for classic American small-block muscle, this stainless steel exhaust header delivers the crisp, unrestricted V8 exhaust note and responsive mid-range torque your vintage Mustang demands.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50512357392632,"sku":"DS-ETJ6XLLN2","price":275.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-header-for-ford-mustang-1974-1977-5-0l-1.jpg?v=1789426193","url":"https:\/\/performancechiptuning.com\/es\/products\/exhaust-header-for-ford-mustang-1974-1977-5-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}