Been in the process of refurbing a 93 C3500. Lowered it and haven't driven it due to prepping for paint. Took it to get the windows installed today and noticed a whirring or rattling sound when I let off the accelerator. Sounds perfectly fine otherwise. No vibrations that I can tell. Wasn't there before lowering it. Absolutely sounds perfect during acceleration. Kicked it in to neutral on the way home and still had the sound. I'm assuming the angle on the drive shaft may be causing the bearing on the drive shaft to have problems? Any one else run in to this issue? I used Belltech's 722SP which is a axle flip for 8 and 6 in the front. Put the shims in like suggested so I'd think that'd be OK. It isn't the first lowering kit they've built for a 93. I'm going to put it on jack stands when I get home and look around but any ideas of what to look for would be great.
Thanks in advance.
Thanks in advance.