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 71 gear ratio (33-tooth ring

71 gear ratio (33-tooth ring gear

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Description_FAB Replacement Harness for PN 6201/62013 Digital 6A Description_FAB Replacement Harness for PN 6425/64253 Digital 6A-L

and robust core provides an increase in capacity of 0

The advanced component design and circuitry of the 6 HVC Ignitions produce incredible voltage with high current output

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 71 gear ratio (33-tooth ringBuilding 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