transmission spit out fluid?

[69bananabeast]

today I got a call from my mechanic and the 440 was almost ready to move on her own for the first time . I got another call about an hour or so later that he put 6 quarts in the tranny and he put in in gear but nothing happened .  So he then put in 2 more quarts in . From there the tranny spit out about 2 quarts of fluid and some how the headers caught fire.  Any one know why it would spit out fluid like that and why would it not do anything when shifted?

[Rolling_Thunder]

it spit it out because it was overfilled...      cant help ya on why it doesnt shift