Hi it is not a case of things that aren't broken it is more case of things that have enough wear in them to set up this reaction with the steering and suspension. the idea of moving both the power source the engine and steering further away from the wheels is bound to produce problems.that is just pure logic when it comes down to making these sorts of modifications to something.
it also goes to show you know very little about what you are doing. why do you think engineers who work on design of cars need a degree in physics.
It's because you jerked all the components of a suspension and drive train way out of alignment
Sounds like you need an alignment. You need to do this after any suspension modification. Another cost of having a highly modified vehicle.
urd
i have a 1977 gmc k25 and i have a 4" lift and just recently went from 33" tires to 37"s. the first ride with the big tires i make it about 3 miles then all of a sudden the trucks is shaking like its going to fall apart and its coming from the front end. now when i drive the truck once i get to about 30mph its starts vibrating if i stay the same speed it gets worse until i come to a stop but if a accelerate its doesn't get worse but still vibrates a little in the steering wheel. i just bought wheel bearings but the guys a napa auto parts gave my a laundry list of other things that could be wrong. please help i dont have the money to fix things that aren't broken