Thanks for all your help and input. Its nice to have a forum like this!
Also is there an easy way of telling which line is the hot and the return other than feeling it while running?
3.73 Rear Axle Ratio, Speed limit is mostly 55 to 65 so it does not wind up that high of an RPM. Is it difficult to install a external transmission cooler? Never installed one before. I know I had seen the lines coming up to the radiator, do I just come of those lines?
I have a 2003 Chevy Express Cargo van with the 4.3 V6 and the 4L60E transmission. It has 61k light duty miles currently. I bought this van to put it on a delivery rt. It will be driven 250 miles daily mostly all highway making a few deliveries to Dealerships etc..
This is the first time I will...