Speed Engineering LS Swap 1 3/4" Shorty Headers - Classic GM & Trucks
Speed Engineering 25-1159 1 3/4-inch shorty headers for GM LS swaps in classic Camaro, Firebird, Nova, Chevelle, C10/K10 and OBS C/K1500 applications. 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. Chassis, steering, oil-pan, transmission and exhaust-fabrication restrictions vary. 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.