i have a prob with my 1981 f150. it has 6in lift with 37s. and iv noticed when i hit a hard bump like rr tracks my truck shakes violently. when i slow down then go again it stops. when i lifted the truck i lifted it with a used suspension lift. and there was no drop pitman arm. so my tie rods and center link are and a little angle. would that have anything to do with it?? i would appreciate any help thanks.

 

Steering stablizer shocks? A lot of tire.

 

Drop down pitman arm. Maybe drop down radius arm brackets.