I went on a test drive today after installing a one piece alum drive shaft in my 06 gt, and its making a very low humming noise. My car has Eibach lowering spring on it, so Im not sure if my car being lowered is messing with the angle of the drive shaft or what is going on.

Any help would be would be appreciated.

Matt

 

yes for 1. you need to correct your pinion angle. Easyest way is to install and adjustable upper control arm and mount. BMR makes some nice pieces. Dont know why Ford sets up pinion angles positive. Autos should have a angle of -2 to -3. Manuals -3 to -5.

 

Ok I tried setting my pinion angle to -4 deg after installing my new upper control arm. I used jack stands to level the car as best I could with loading the suspension. BBBBBBuuuuut the driveshaft is sounds like it making a vibration noise.... any tips