Re: Need help with drive train noise
I wouldn't call it strictly a 700R4 thing (I know you didn't, I'm not saying that) I can think of three 14-Bolts that do it. One Full-Floater, two Semi-Floaters. FF in an 86 2wd with a TH400. One Semi-Floater is in my rig, the other is in my cousins 97 GMC Sierra 1/2 ton Z71, 6 lug. It's stock. So that's a 4L60-E, an sm465, and a TH400, I think it's the rearend. If I put min in gear and park it, I can roll the truck back and forth, without the pinion/u-joint/driveline turning. Same with the 86 with the FF. There's just a little play in the diff, on all three. I've never had a 700r4, so I'm not saying that that isn't it, but my experience has been with the play in the rearend.