I have this real bad vibration coming from the rear of my stang. I was thinking that maybe it's the pinion angle, is that possible? If not how can you tell if your axles are bent? I have 3.73 gears with a locker. When I first put the rearend in I didn't have any problems until I changed my u-joints then I started getting this vibration. It doesn't do it all the time under 65 but it will some times and when going around a corner it will go away until i strighten back out.

 

Re-check those U-joints, the pinion angle would need to be way off to cause that.

 

I have already changed the u-joints once (second set). When I get a chance I'm going to check them again. I was told by ford that i needed to buy the aluminum shaft because of the gears that I'm running. I don't think that's true and that they are just trying to make a sell.

 

Check and see if wheel lugs are tightened up. Experience speakin' here.......

 

checked it, even used a torque wrench just to make sure that they are tight. Anything else?

 

Something in the rotating mass is out of balance, time to get into the differental and stuff. Check U-joints too...........

 

I'm going to the local speed shop and see what they can find. It just weird that i didn't have any of these problems until after I replaced the u-joints. What the chances that it's the it could be my tires?

 

a good chance get them balanced

 

also make shure your drive shaft bolts are tight

 

I'm going to check that right after I replace my header gaskets. I think that i'm going buy new tires but I was thinking of buying new rims. Right now I have the old 10 hole rims. I would like to find some 16inch pony's. There a place here in town that has a set but they want $400. It's not like they have great tires and they have a little bit of curb rash. I have bought a pair of Monte carlo for (an old chevy) rims with brand new tires on them for less than $350. Any way I will check the everything and see what I can find out.