my car used to have a 305 5.0 ltr in it. i just put a new 350 crate engine in it and i put a crane cam with a rough idle in it!! when the transmission hits first its a real hard hit! does that mean the trans is going out or should i put a new tork converter in it with a higher stall? i kept the original trans and converter from the 305 engine!!! if any body knows about transmissions id appreciate some advise! thanks and if you know where i can find the thransmission identication code on it cause i cant find the code any where on the trans i dont know what kind of trans it has?