My Driveshaft shop axel had a bad OUTER cv joint that clicked really bad so I ordered a new outer joint from Driveshaft Shop. After racing at the track, on my way home I noticed the car would shake under throttle. I figured that joint **** the bed. So I replaced it. It still shakes under throttle. Something else let go. I am replacing the tie rod bushings, and not that I think it is this, but also the upper ball joints. I also will check the rear motor mount since I havent check that one yet. It seems to me that it is drivetrain though. The only thing left is those inner joints. I dont want to replace them till I know they are bad, so is there any way to check or know if they are bad. thanks

 

Driverside has very little play and passenger has a little more. WTF

 

Im willing to bet its the inner cv joint. Vibration under acceleration is a tell tale sign of an inner cv joint.

The only real way to tell is to pull the axle out, and pull the joint apart.
I've had to do this before.
I had both axles out and I still couldnt figure out which one was bad until I pulled the boots off and the joints apart.