so I put a 4" lift on my 82-k10

[enigma2y0u]

As I said, I put the lift on. Well it seems that when I am accelerating from a stop I get a shke in my shift stick. Also it is slightly present in the whole truck. I have a short box by the way. Anyways, when I put the lift on me and my buddy pulled out the driveline a few inches past where it was going to mount up to check for length problems and that seemed fine. I don't know if this is a common problem or not. I am not a mechanic, but could I need a new set of U-joints? That is the only thing I can think of. It just seems like the truck is running rough, before when I used to stomp on the gas from a light it would get up and have a nice smooth fast acceleration. I still get the fast acceleration, but the smooth is gone.

Also I noticed a performance difference in my engine. Like there was a drop in torque in the rear wheels. This makes sense to me do to the physics of the different angles, but do any of you notice anything like that?