Speed Engineering 1-7/8" LS Swap Longtube Headers — 1988–1998 Chevrolet & GMC C1500 2WD GMT400 OBS Truck | 25-1137 1983-lincoln-town-car-esi2402056 DOT and SAE Compliant

DOT and SAE Compliant

5 inches maximum outside diameter

Power Cable - 12v

and robust core provides an increase in capacity of 0

Speed Engineering 1-7/8" LS Swap Longtube Headers — 1988–1998 Chevrolet & GMC C1500 2WD GMT400 OBS Truck | 25-1137 1983-lincoln-town-car-esi2402056 DOT and SAE CompliantBuilding an LS swap into your 2WD GMT400 OBS C1500? Speed Engineering's 1 7 8" LS swap longtube headers are specifically engineered for great fitment on the OBS platform mandrel bent, TIG welded, and CNC machined for a precise fit on the most popular classic GM truck LS conversion. Compatible with the full LS engine family from 4. 8L through 6. 2L including LS1, LS2, LS3, LS6, and LSA. Dyno proven to deliver over 25 rear wheel horsepower over stock