I was also taught when replacing the ds or third member to bolt the drive shaft up and drive it. If it shakes or feels off balance, unbolt and turn a 1/4 until it stops. So ya, I think it might be hit or miss. Common since tells me this might may not be the right way. But its all I know. Others will chime in I'm sure. Good luck .
Actually, the picture was taken while the car was not on jack stands but flat on the ground. It also looked this way while it was on the stands.
if the pinion angle is way out of whack, that will cause the drive shaft to be pulled back and can/could also cause the "noise". *I also wonder if the mustang pumpkin is shorter causing the shaft to be pulled further away from the tranny.
If it is shorter, what would that entail regarding switching pumpkin ends? I still have the original. Can I simply unbolt the end from the old pumpkin and place on the new one? Or is there internal "guts" to be concerned about. Thanks.
The shiny spot on the driveshaft is from bumps in the road... its a slip type yoke for a reason... it slides in/out as needed to allow for proper length of driveshaft. I havent dealt with posi's much, but minispools and fullspools and i know if you turn sharp w/ one of those the tires chirp, but no clunking. I'd check the front u-joint first thing, easy, cheap fix. But u-joints usually "ping" when they are bad. Make a "ping" when it goes into gear. Did you turn the wheels both ways when you installed the diff? frontwards and backwards. I also suggest adding the friction modifier to your rearend regardless of what type oil. The additive is a small amount and couldnt hurt either way
I won't argue with what your saying, but if my driveshaft traveled that much from "bumps in the road".......my fender lip would be beaten all to hell from the tires with that much rear end travel.
Yea, did check/turn the wheels both ways after install-no problems or noises. Come Tues/Wed (my days off) this is what I'll try; gonna replace the front ujoint regardless; rotate the current placement of the driveshaft 180 degress and get more precise measurement comparisons with both pumpkins, and check the tranny mounts, and add that modifier your talking about. Can I get that at a local parts store? Had a Camaro once with a limited slip and do know about those "chirps" while turning.
Autostone carries it here.....I forget the part #, hotrodbob suggested it for my truck and it made it mucho-better
my u joint is about that far, notice his transmition does not have a dust boot at the end of it, if thats the original drive shaft, the old original trans would have a good 1 inch dust boot at the end of the shaft.
You'd be surprised how much that moves. The friction modifier should be down the same aisle as rearend grease, oil, etc.... if you cant find it ask a parts guy Tell them its friction modifier for positrack rearends. They'll know what your talking about. Its relatively cheap and comes in a small bottle, or sometimes a packet/tube that is about the size of a saline solution packet/tube If your tailshaft did have the dust cover on it... it would prob hit about where the line is on the shiny spot... so not that much would actually be hanging out. Looks like you have a new seal on the tailshaft so the dustcover may have been removed?
Yes... driveshaft goes in it and then into the transmission. Its just a rubber "flap" all the way around the yoke to keep mud and dirt off of the yoke where it could potentially slide into the transmission when you hit a bump.
