[Bandit Bird]

I hooked it up a transmission pressure gauge to the yellow port in this picture.

At idle I have 0 psi. When revving it up in neutral i got it up to 150psi and in drive and reverse I got it to about 75psi all at around 4000rpm. Does this pressure seem low? Or do I have another issue going on here?



Here is the back story- I have a 68 firebird with a 400 and a turbo 350 trans in it. I swapped one 400 for another and did the torque converter at the same time. After doing this now the trans started kicking out of 3rd gear when the car got hot(15 mins+ of driving). Going into neutral then to drive would put it back into 3rd. Disconnected the vacuum modulator(old engine produced little vacuum) drove it to a car show and it was shifting better manually but still kicked out of 3rd once. When we went to leave the show the trans wasn't shifting at all now and when you put it in reverse you have to rev it up before it moves.