Dropped a new cam and lifters into the tired 305 in my Binder (followed the Fat Hack recipe in the tech-o-matic) and after getting it all together, and breaking in the cam, tranny started puking out the dipstick tube. First time, engine was pretty hot from cam break-in and started a pretty good fire underneath. Got that dealt with and went back to tinkering last night. Everytime I get it going and then shut it off, could hear something like pressure building in the cooler lines and 10 seconds later, the puking begins. Oil level in tranny is fine, checked the vent and it seemed okay, and the tranny worked fine 1 week ago. What am I missing and WTF? Is the tranny crapped out? No big deal if so, but budget constraints prefer the easiest fix.
It couldn't be something odd like you bolted up the tranny and never got the drive lugs lined up on the torque convertor, squashed some stuff? Just a guess, as I just can't see what could cause the problem you've got.
The vent could be plugged but that shouldn't happen with just a cam change. Is the trans overfilled? or as was suggested the convertor boltup , is the trans oil that hot or is it just pushing it out??
Are you using a tranny cooler or cooling it thru the rad? If you are maybe the internal cooler is leaking & its causing pressure in the tranny !! just a guess. its pretty lame but its the only thing i can think of!!lol JimV