So today I looked at a 1999 dodge ram 1500 my friend is selling. I took it for a test drive and it felt fine, but near the end of the drive I felt/and heard a clunk noise when I hit the gas a couple different times. I'm not 100% sure exactly what this could be, anyone know or have had this issue?

P.S. It only seemed to clunk when I hit the gas from a stop.

 

Was there crap in the back of the truck? Lol Maybe check motor mounts and trans mount.

 

could be a motor mount or a trans mount....under torque it might be moving JUST enough to klunk....climb underneath it and shake the trans from side to side and see if the motor mount needs replacing....you can do the same for the same for the motor mount from under the hood

 

u joints-check them