Speed Engineering LS Swap 1 5/8" Shorty Headers - Classic GM & S10
Speed Engineering 25-1039 LS-swap 1 5/8-inch shorty headers. Speed Engineering publishes this same exact SKU for classic GM applications—including Bel Air, Nomad, Camaro, Firebird, Nova and Impala—and for 1982-2004 Chevrolet S10/S10 Blazer LS swaps. Natural 304 stainless steel, mandrel-bent and TIG-welded construction, 2 1/2-inch V-band collectors, merge spikes, port-matched flanges, CNC-machined flanges, and included graphite gaskets.
Application-specific steering, oil-pan, engine-mount, transmission and exhaust-fabrication restrictions apply. These are GM LS-series swap headers only.
SMG Ceramic Plug Wire Upgrade
SMG 9070C 8mm ceramic plug wires use heat-resistant ceramic boots that will not melt against hot header tubes like conventional boots can. They are the only plug wires used on SMG in-house header builds. Choose SMG LS MLS gaskets, 9070C wires, heat wrap, or the available combinations. Race-use product.
Processing & Shipping Overview
Processing occurs before shipping.
Most in-stock items typically process within 2–3 business days before shipment or pickup. Expedited shipping options affect transit time after an order ships and do not speed up processing.
Made-to-order, special-order, vendor drop-ship, and freight items require additional processing time before shipping. Any extended lead times will be noted on the product page when applicable.
For the most up-to-date order status or lead time questions, please contact sales@smgspeed.com or use live chat during business hours.