3.4 auto 94 and everytime i put it in fromrev to drive it makes a thump soundand lost alot of power130k miles and brake gone bad at the same time and my anticoolant over flowed cuz the engine was hot

 

ok

 

ive been hearin metal hittin something under my car wen at park i thought it would be cuz of the exhaust 2 tight where the straight pipe is jus put on headers jus hopin they quit comin lose maybe it aint a tranny prob took it 2 a meachanic its fine jus minor part for it