Speed Engineering LS Swap 1 3/4" Shorty Headers - Classic GM & S10
Speed Engineering 25-1161 1 3/4-inch shorty headers. Speed Engineering publishes this exact SKU for classic GM applications—including Bel Air, Nomad, Camaro, Firebird, Nova and Impala—and for 1982-2005 S10/Sonoma/S10 Blazer/Jimmy plus 1991-2001 Oldsmobile Bravada LS swaps. Mandrel-bent, TIG-welded natural 304 stainless construction with 3-inch V-band collectors, merge spikes, port-matched CNC flanges and included graphite gaskets.
Choose SMG LS MLS gaskets, SMG 9070C ceramic plug wires, or both. The heat-resistant ceramic boots will not melt against header tubes like conventional boots can, and 9070C is the only wire set SMG uses on in-house header builds. S-truck use is 2WD only; chassis, steering, oil-pan and exhaust restrictions apply. LS swaps only; 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.