Ever since I lowered my 1980 D150, there has been a squeaking noise coming from the rear. I only hear it when the engine is under load or when driving uphill. I don't drive the truck much because it annoys me.
It finally hit me what I think it may be. I'm thinking that the driveshaft is too long for the truck now. I dropped the rear a tad over 6" with the axle flip. Is the driveshaft near the limit of its compression? I've checked the u-joints, shocks, axle u-bolts, and everything else I can think of. Do you think I'm onto something?
