Would gears normally pick up a vibration after 3 months of being installed? i would think that most likely if they weren't done right they would have symptoms from days one. correct or not?

 

none sounds more like driveshaft to me

 

swapped driveshafts out checked u joints. still have the vibration

 

check trans mount

 

ck the pinion flange and see if it is loose or damaged. they may have not tightened the pinion enough.

 

i pulled the driveshaft and plugged the trans so no fluid would come out and ran the car on jack stands with no vibration. put the driveshaft back in and ran it on jackstands and the vibration was back. the driveshaft is good so it has to be in the rear right?

 

Tail shaft bushing will make you vibrate like a bitch.

 

tailshaft bushing has been changed so its brand new

 

put it back on stands and let the wheels spin to see if they look like they're warped or take off the tires and see if you still have it that way you can narrow it down to the rearend

 

i pulled the tires off and ran off and still the same. and i did run the lugnuts back on so the rotors stayed in place. its not in the tires