So I got the readylift 7” and some 37” tires installed and I can feel a little shake in the gas pedal when I accelerate and if I punch it from a go it’s worse. Any idea what is causing this so I can have it fixed ?

 

Driveline angles are off.

 

how do you fix that ?

 

Take it back to whoever installed it, tell them what you told us and have them measure everything and put the correct pinion shim in to stop it.

 

I’m planning on regearing so they should be able to fix that once I regear or am I wrong? I honestly know nothing about this.