This automatic transmission came out of 63 truck. There is a 1/8 inch steel line directly behind the shift linkage. I don't know where it goes and what its purpose is. It had a compression fitting on the end, but it came off before I took the picture. The cooler assembly is on the other side of the transmission. I am hoping that one of you have one of these in your truck and can enlighten me.

 

Mine just goes to a bracket on the rear side of the drivers head... I assumed it was a breather of some kind

 

It is probably manifold vacuum for the kickdown. When you stomp on the gas you lose manifold vacuum and it causes the tranny to downshift a gear.

 

Are you able to take a picture of yours that I can see? It would be very much appreciated. Yours is a three speed automatic, correct?

 

Yup, I have the 3 speed cruisomatic with 292v8, I will take a picture when I get home

 

Also, does your drive shaft have the same connection on the rear of the tranny? I know my picture isn't the greatest but the drive shaft bolts onto the rear of the tranny.

 

 

Thank you Cory for the pictures. On another site, a member said that it is a front pressure port and the line goes up to some kind of Shrader valve. More research on that now. ha

 

Whatd you find out?