Hey guys I need some help. I installed a fox ss in stock location and rk rear upper ca and now while I accelerate I get a loud spinning sound coming from the front/middle of my jeep. The sound is really only when the jeep is cold and when it warms up it goes away. I never had this sound before I installed the two parts so anyone have any clue what they may be? Thanks in advance!

 

rear uppers with a stock drive shaft?

 

Yup. I also have a 2.5 lift with 35 if that helps

 

did you change the pinion angle, or set them to factory lenght?

 

I set it to the length rk had in the install manual . But if that was the case wouldn't the sound come from the rear?