69'Net
Well-Known Member
This may be a bit lengthy but I'll do my best to explain. I've got a road runner that is mostly done being restored. Sorting out all the issues now. I noticed it's got a fast shudder or vibration above 60 mph. It has a 3:91 suregrip out of my dart, had no issues in that car. So first thing I did was jack up the rear of the car put it in gear and noticed it sort of binds at higher speeds at the U joint. So I replaced it. Here's where I developed a new problem. Not even sure it's related to the U joint. I drove the car down a long stretch of road, vibration still there at higher speeds. Did fix it. But I did a tight U turn to come home and developed almost like a whine or rubbing noise from the rear diff area. It's not a tire or anything like that. Definitely rear end area. So I came back jacked up the rear again rolled the tires didn't hear anything. Drove the car lightly around for almost 40 min, no noise. So I decided to try the tight U turn again, noise came back and made noise on every turn back home. If I jack the car up and roll the tires it will go away. I'm kinda stumped. Could it be a green bearing not liking the tight cornering? I've always heard they're junk.