So the short story is that I fried a perfectly good transmission, 4L80E, in my quest to get my 37 LaSalle ready for the Goodguys show two weeks ago. Now I will replace the transmission and have some questions on keeping in cool.

I have limited options for installing the transmission cooler, but I do have a transmission cooler in the Universal radiator I am using from Speedway. I have had mixed reaction to using the tranny cooler included in the radiator. However, I have hot exhaust on one side of the car and brakes and wiring taking up much of the other side. I would have to bring lines upa nd over the transmission to put a cooler on the "cool side" of the car.

Here are my questions:
1. Should I use the integrated tranny cooler in the existing radiator?
2. Any good ideas about how to mount an external tranny cooler? Pics would be great.
3. What size line should I use? I have some long lengths of 3/8 hard line but the transmission is plumbed for 5/16. I can get adapters/fittings. Would the bigger diameter line help with cooling or create other unintended consequences?

Thank you