It vibrates from 50 and up and i can't get it to stop I have change all rear stuff control arms and the pan bar if any one know something that i don't plz help me thanks

 

It has bad vibrates from 50 and up can't get it to stop I have try everything if any one can help I would thank u very much

 

need more info? where do u feel the vibration? seat, steering wheel, front rear, will it vibrate sitting still or reving engine. I would suggest lifting rear wheels off the ground run it up. then remove the wheels and see if vibration goes away.

 

 

When you say you have tried everything, we can guess that the alignment and tires are fine?? Many years ago I had a problem with another car that did what yours did. After 3 alignments I finally found a place that diagnosed the issue as a bad tire. It couldn't be seen from the outside. A belt had separated if I remember right. I hope it's that simple for you.

 

That my next step is try another new driveshaft it come from the seat area and only does it ride 50 an up just try pen point it

 

Vibration is either rpm based or speed based. If it's happening only at a set speed it's generally wheel, tire, steering or bearing. If you leave it in park and increase rpms and there's no vibration it'll narrow your search down greatly.

 

I'm guessing after you installed the new parts in the rear you didn't get it 4 wheel aligned. If the rear end is slightly left or right or just cocked to one side it will vibrate. And I mean like one or two degrees. Go have a 4 wheel alignment done. Just because you count threads and think its okay. Chances are its not. Most think pinion angle, but angling it up or down should not alter the way the shaft spins through the u-joints. A compound angle is what causes it to vibrate.

 

I'm not sure if you saw street outlaws Bristol. But Chief had a problem with his car shaking and burning the front tires off it when they came down after the small power wheelie. If you watch, the first guy that comes up to chief says exactly whats wrong, (alignment) and Chief blows him off like he don't know what hes talking about. It was pulling right when it would come down. So they angled the rear end more to compensate and after it came down that time the car was so far out of alignment it scrubbed the tire so hard it blew it out and he hit the wall. I will bet it shook bad under power.

 

My 96 Impala SS did the same thing after a transmission re work it turned out to be the torque converter out of balance...

 

It has new 3000 stall from summit and i have not had check for aligned me yet but they had on drag street before I got and i am wonder if the axles or the bearing are out the rear end it has new wheels on it when got back it had stock camaro wheels on it and still done it then so am thinking rear end I have chance everything else that i can think of but i put after market control arms and shocks on it so it might could be out line

 

If any one CAN PLZ HELP ME !!!!! I WOULD THANK U VERY MUCH

 

The control arm is not adjustable ones