Rear end trouble.

My car when i push on the back of it front side to side i heard a clunking noise, So i jacked it up and pull the rear wheels off.. I can slide the rear axles in and out about 1/4". Then the passanger rear tire looks like the inside is wearing faster then the rest (thats how the tire i took off was, and i put new ones on it and its doing the same to this one). It feels like it has play in it too, I can push the car about a half a foot when its in gear before it stops. Sounds like the front u-joint but i checdk it and it seemed good so i didnt change it. Got new u joints for it, but what else do you guys think i need? I know bearings, seals, and oil, But do i need C-clips maybe even new axles? Thanks James.
 
I would pull the axles out and see if everything looks normal if I were you, and go from there. The axles will have a little bit of play, side to side. But not 1/4 inch.

Check all your rear end mounting points. Shocks, aswell as upper and lower control arms for broken bolts, bad bushings, ect. ect.
 
The axle sways some but, its the brake drum that i can move in and out so it has to be inside the axle. I quess the onlything i can do is tear it apart this weekend.. Hopefully i wont hurt it driving it this week since i dont have another licesnesd car now.
 
Okay well, when the wheel is off, there is nothing holding the brake drum on except the shoes if you have the parking brake on. So the drums moving in and out is perfectly normal. If the axle is moving 1/4 inch in and out with the drum, then yes, that's too much.
Pull the drum off and see how much the axle is actually moving in and out. It shouldn't be more than like a millimeter or two. If that checks out, save yourself some trouble and check everything else for the cause of the slop before cracking into the diff.
 
Ill have to wait till saturday before i will have time to mess with it, so i hope it doesnt mess anything up. Im pretty sure its the axle sliding it and out when i push on the side of the car. It could be the whole thing moveing and making the clanking noise, but its wearing that passenger tire funny so id say it might be inside the rear end. I knew i should of spent most of my money on parts, now my insurance is due and i dont have much money left to fix my rear end.... James
 
Sounds dumb...but,you sure it's not the float inside the gas tank? If you have a quarter tank of gas or less and you push the back end sideways to make it shake from left to right,the float knocks against the edge of the tank.

And being that your tire is wearing excessively on the inside,it sounds allmost like a straight shoot to either a loose or damaged shock mount or control arm (What he said above).

You didn't mention if it was just on one rear tire or both sides.Also,if your going to be taking off the drums,i'd seriously buy a set of new drum brake cylinders.I noticed when I was looking into rear end noise once on an 89 GT I had,upon removing the brake tensioner springs,the piston within the cylinder just popped itself all the way out.The rubber seal was old and eroded and fluid was spilling from the cylinder........Get new ones.They are only $10 bucks a piece.And i'd also highly reccomend you get new brake pad tensioner springs also.They get so stretched and pulled apart.Do this unless you plan to convert to disc brakes.