{"product_id":"ls-engine-swap-headers-for-chevrolet-s-10-blazer-gmc-sonoma-jimmy-1982-2004-4-8l-5-3l-5-7l-6-0l-6-2l","title":"LS Engine Swap Headers for Chevrolet S-10 Blazer GMC Sonoma Jimmy (1982-2004) 4.8L 5.3L 5.7L 6.0L 6.2L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Flow LS Swap Headers for 1982-2004 Chevrolet, GMC S-10, Blazer, Sonoma, Jimmy (GMT325 \/ GMT330)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The LS engine swap headers eliminate tight engine bay clearance restrictions on 1982-2004 S-10, Blazer, Sonoma, and Jimmy 2WD models to optimize exhaust scavenging when installing a GM Gen III or Gen IV V8.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet, GMC S-10, Blazer, Sonoma, Jimmy Engine Bay Clearance Deficit\u003c\/h3\u003e\n\u003cp\u003eSwapping an LS V8 into the compact \u003cstrong\u003eGMT325\u003c\/strong\u003e and \u003cstrong\u003eGMT330\u003c\/strong\u003e chassis introduces immediate packaging issues. Factory truck and passenger-car cast exhaust manifolds collide directly with the steering shaft, frame rails, and firewall. Reusing standard manifolds causes severe physical interference, restrictive exhaust gas choking, excessive backpressure, and localized heat soak that degrades underhood wiring and steering linkages.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed from polished stainless steel, these headers utilize precision mandrel-bent 1-5\/8\" primary tubes to accelerate exhaust gas velocity and bolster low-to-mid range torque. Robotically TIG-welded seams prevent thermal fatigue and cracking, while heavy-duty 3\/8\" CNC-machined head flanges resist thermal warpage to eliminate gasket blowout. The primaries merge seamlessly into 2-1\/2\" collectors, engineered specifically to route exhaust gases cleanly around the 2WD steering column and chassis components.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Driver-Side (Left) Stainless Steel LS Swap Header\u003c\/li\u003e\n  \u003cli\u003e1x Passenger-Side (Right) Stainless Steel LS Swap Header\u003c\/li\u003e\n  \u003cli\u003eExhaust Header Gaskets\u003c\/li\u003e\n  \u003cli\u003eHeader Flange Mounting Bolts and Installation Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100 style=\" border-collapse: collapse border: solid font-size: min-width:\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;\"\u003e1982-2004 Chevrolet, GMC S-10, Blazer, Sonoma, Jimmy (2WD)\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;\"\u003eGM Gen III \/ IV LS (4.8L, 5.3L, 5.7L, 6.0L, 6.2L) \/ GMT325, GMT330\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;\"\u003e270-430 hp \/ 285-424 lb-ft (Donor LS Baseline)\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 (Custom Swap Application)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1982-2004 Chevrolet S-10 Pickup (2WD Only)\u003c\/li\u003e\n  \u003cli\u003e1983-2004 Chevrolet S-10 Blazer \/ Blazer (2WD Only)\u003c\/li\u003e\n  \u003cli\u003e1982-2004 GMC S-15 \/ Sonoma Pickup (2WD Only)\u003c\/li\u003e\n  \u003cli\u003e1983-2001 GMC S-15 Jimmy \/ Jimmy (2WD Only)\u003c\/li\u003e\n  \u003cli\u003eCompatible with GM Gen III \u0026amp; Gen IV LS-series V8 swaps: 4.8L, 5.3L, 5.7L, 6.0L, 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT325 \/ GMT330 S-10, Blazer, Sonoma, Jimmy?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1982-2004 Chevrolet, GMC S-10, Blazer, Sonoma, Jimmy equipped with an \u003cstrong\u003eLS-series V8\u003c\/strong\u003e engine swap. \u003cstrong\u003eDoes not fit 4WD or AWD configurations, and will not bolt up to factory 2.2L, 2.5L, 2.8L, or 4.3L engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre modifications required to clear the steering shaft?\u003c\/h4\u003e\n\u003cp\u003eThese headers are routed specifically to clear the factory 2WD steering shaft, though minor engine placement adjustments may be required depending on your specific aftermarket swap mount brackets.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet, GMC Truck Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle high-demand street and track duty, this stainless steel header assembly withstands intense exhaust gas temperatures and chassis flex, maintaining leak-free performance and dependable power delivery.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67591993131256,"sku":"DS-EJ25R8RVD","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ls-engine-swap-headers-for-chevrolet-s-10-blazer-gmc-sonoma-jimmy-1982-2004-4-8l-5-3l-5-7l-6-0l-6-2l-1.jpg?v=1791395862","url":"https:\/\/performancechiptuning.com\/es\/products\/ls-engine-swap-headers-for-chevrolet-s-10-blazer-gmc-sonoma-jimmy-1982-2004-4-8l-5-3l-5-7l-6-0l-6-2l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}