I need a PowerGlide Expert!

[Ken K.]

I'm sorry, but this isn't for a Corvette. The question(s) are for a 1957 Chevy Belair.
I'm in the middle of detailing my motor compartment on my 1957 Chevrolet Belair. Removed most everything, and now beginning to reinstall.
I just noticed that one of the transmission cooler lines has a "Check Ball" valve installed on it. (Not Factory)
The fluid will only flow one way. I'm not sure on what fitting this line, (With the valve) attaches to on the tranny. (1957 Cast Iron PowerGlide Transmission.)
My question is: Does anyone know what direction the "Radiator Cooler" fluid flows? (Coming from and to the transmission?) Another words, the trans has two fittings on the passenger side, One located higher then the other one, which one is flowing out and which one is flowing in?
My other question is: Why? Why would someone install this into the tranny cooler line? Is it preventing the cooler fluid from "backing up" into the tranny? Is this needed, and is this a good idea to have?
Any help would be great!

Ken

[Jim T.]

Re: I need a PowerGlide Expert!

Used to have a powerglide Chevy long ago, but do not know anything about the one way valve. Have read on this board about powerglides burping fluid. Perhaps this check valve would prevent that. Do remember well my powerglide and me running down route 66 taching 5,600 and the speedometer past 120 and it was stock. Still have the ticket I was given.

[Roy B.]

Re: I need a PowerGlide Expert!

Top line out , bottom in, check valve is to keep the fluid from backing in to the PG, sold saying that will stop burp and loosing fluid on the floor . NOT SO! But you can keep it in or not.

[Ken K.]

Re: I need a PowerGlide Expert!

Thanks Roy, that is what I was looking for.

[Dennis C.]

If Roy answered your question...

I'm amazed... He's my hero... DC