Just search in the yellow pages for drivetrain shops or something similar. It'd also be helpful if you edited and show where you're located; that way we can reccomend a shop locally.

The other thing you may want to try is to just rotate the driveshaft 180° on the rear axle yoke; sometimes this solves the issue.

Changing gears has nothing to do with the vibration unless the gears were installed incorrectly. The Driveshaft is most like just out of balance; when you have it balanced they will check it over and make sure everything is good. I would also suggest having them replace the u-joints as well when they balance it; it could be those are worn as well.

I listed the only reasons you should "NEED" a new driveshaft; unless having your stocker balanced does not fix the issue.

One other thing; you list "Full suspension" as a mod; what aftermarket parts are on the rear suspension? If you have an aftermarket torque arm, and it's not adjusted properly, it can cause a NASTY vibration as well.

 

If you go a taller (lower numerical) gear the speed at which the DS vibrates will be increased in proportion.

Rich

 

wow. all these things can cause nasty vibrations? well first im going to get my driveshaft balanced and then how can i adjust my torque arm? By the way i live in Union City(By fremont, hayward, newark), CA. Pretty much in the Bay area.

 

Try checking the very basic/obvious things as suggested in your other thread before jumping to the most expensive / least likely solution...

https://www.camaroz28.com/forums/sho...d.php?t=609817