so i get a metal clanking noise when i let off the gas only sometimes though. It is very similar to the noise my exhaust made when I broke a hanger and it was hitting the crossmember. This time however, the noise is coming from the driverside floor panel. also, I'm gettin slight vibrations from 30mph to 35mph, and out of control shaking from 60mph to 65mph. I just installed a 2" BB on it and everything has been going to **** ever since, any input will help I'm hitting the wall right now.

 

have u checked your universal joints? Any kind of lift/aftermarket wheels will make small issues larger, check all steering and susp components. you want no play in anything

 

ive checked everything pretty much, some things i found were the I can wiggle around my front driveshaft I can get about 25% of a turn. also, the bar on my steering linkage that goes from the driverside rod end almost to the other end, is not straight its bowed like its been pushed back in. other than that everything looks good if it was the main driveshaft I thought I would get vibes all the time and not at just certain speeds.

 

a loose front drivshaft and bent steering linkage.... i think you found your problems

 

i didnt know if the driveshaft being able to turn a little was a sign of the u joints being shot, since it still turns on its axis. I know this truck was in a front end collision before with the old owner so Im not surprised some of the front end is screwed.

 

i believe it would be my tierod that's bent