{"product_id":"exhaust-headers-for-chevrolet-gmc-c-k-trucks-1988-1997-5-0l-5-7l-engine","title":"Exhaust Headers for Chevrolet GMC C\/K Trucks (1988-1997) 5.0L 5.7L Engine","description":"\u003ch2\u003eHigh-Flow T-304 Stainless Exhaust Headers for 1988-1997 GMC, Chevrolet C\/K Trucks (GMT400\/SBC)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces the restrictive, heavy cast-iron factory manifolds with mandrel-bent stainless steel tubing to maximize exhaust scavenging and reduce backpressure on 5.0L and 5.7L V8 engines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMT400 Flow Restriction\u003c\/h3\u003e\n\u003cp\u003eThe factory exhaust manifolds on the 1988-1997 GMT400 platform are engineered for mass production rather than volumetric efficiency. These heavy cast-iron units utilize a cramped \"log\" design where exhaust pulses from neighboring cylinders often collide, creating significant backpressure and turbulence. Over decades of heat cycling, these cast components are notorious for developing hairline fractures and warped mounting surfaces, leading to persistent exhaust leaks and lost vacuum. Furthermore, the internal casting flash and rough transitions trap excessive heat near the cylinder heads, which increases exhaust gas temperatures (EGTs) and stifles the low-end torque necessary for heavy-duty towing and acceleration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThese headers are engineered to eliminate those bottlenecks using 1.75-inch primary tubes constructed from high-grade T-304 stainless steel. This material offers superior thermal stability and corrosion resistance compared to mild steel alternatives. The CNC mandrel-bending process ensures a constant internal diameter through every curve, promoting smooth laminar flow and allowing the engine to breathe more freely. The 7\/16-inch thick head flanges provide a rigid, warp-resistant mounting surface that maintains a consistent seal under extreme thermal stress. Featuring an 8-2 lightweight design on the driver side and a 3-bolt ball socket collector, these headers facilitate improved exhaust velocity and scavenging, effectively pulling spent gases out of the combustion chamber to allow for a cleaner intake charge.\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;\"\u003e1988-1997 GMC, Chevrolet C\/K Trucks (Non-Air Injection)\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;\"\u003eSBC 305, 350 (L03\/L05\/L30\/L31) \/ GMT400\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;\"\u003e175-255 hp \/ 270-330 lb-ft (Approx)\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;\"\u003eUT10520MA158TE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePrimary \/ Outlet Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1.75\" \/ 2.125\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1988-1997 Chevrolet C1500 \/ K1500 (5.0L, 5.7L V8)\u003c\/li\u003e\n  \u003cli\u003e1988-1997 Chevrolet C2500 \/ K2500 (5.0L, 5.7L V8)\u003c\/li\u003e\n  \u003cli\u003e1988-1997 Chevrolet C3500 \/ K3500 (5.7L V8)\u003c\/li\u003e\n  \u003cli\u003e1988-1997 GMC C1500 \/ K1500 (5.0L, 5.7L V8)\u003c\/li\u003e\n  \u003cli\u003e1988-1997 GMC C2500 \/ K2500 (5.0L, 5.7L V8)\u003c\/li\u003e\n  \u003cli\u003e1988-1997 GMC C3500 \/ K3500 (5.7L V8)\u003c\/li\u003e\n  \u003cli\u003eNote: Fits models without Air Injection only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe GMC, Chevrolet Truck Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned for the rigors of American truck ownership, these headers focus on long-term durability and torque recovery. Whether you are refreshing a TBI workhorse or a Vortec-powered daily driver, the T-304 stainless construction ensures your exhaust system survives heavy towing cycles and harsh road conditions without the fatigue failure common in factory cast units.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":47996698755320,"sku":"DS-E3JOZ7H21","price":179.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-headers-for-chevrolet-gmc-c-k-trucks-1988-1997-5-0l-5-7l-engine-1.webp?v=1771268143","url":"https:\/\/performancechiptuning.com\/products\/exhaust-headers-for-chevrolet-gmc-c-k-trucks-1988-1997-5-0l-5-7l-engine","provider":"Performance Chip Tuning","version":"1.0","type":"link"}