trans lines

57 chevy

Jul 14, 2004
trans was pulled & reinstalled for converter change. i have researched every board i can think of & need to know which port on the trans is the in & which is the out. thanks to my son, they were not marked when removed. research answers were about even split on which was which, so this thread is really for a trans man, or someone that really knows the correct answer. most appreciative for someone that knows the correct answer. would like to take for a ride, but will not take the chance of connecting the lines incorrectly. oh, by the way, research had 4 saying top port was out & also 4 saying top was in, so you see my delima.

pardon me for not identifying the trans. this is for a 87 gn factory trans.