Ok...now this just started happening a few days ago. Whenever I'm going like 10-15 mph and punch it in 1st, something hits the middle of the floor like right where the tranny is located. I dunno if it is a bushing gone bad or what. Anyone have any suggestions as to what it might be? It doesnt make any noise with regualr shifting...just when I really get on it from a roll and shifting.

 

u need a new rubber tranny mount.... over time they get old and the tranny will slam around

 

Or a torque arm bushing