Ok, i got an automatic trans from a 85 iroc 305 LG4, the old trans cooler lines are about shot, we just dropped a new motor in, and I was wondering can I run rubber lines from the trans to the radiator where they hook up? I just wanted to make sure there isnt alot of PSI that would blow a line, or would the trans fluid eat or swell the rubber line? thanks!

 

you could run high pressure rubber lines, but it'd be a very weak link and a hack job at best. run steel or flexable steel lines.

 

Why would it be a weak link? Or a hack job?

 

It's generally considered bad practice to run any significant length of rubber hose, since it's so vulnerable to being damaged.

 

Well its on a carbed LG4 ther are significant hoses run everywhere already for coolant or whatever

 

go to the parts store and buy some 5/16" brake line and bend it up and install. should be under $7 total. I believe i used the 52" length pieces for the top and slightly smaller for the bottom.

 

If you do decide to run rubber hose, go to a shop that cuts the hose to the length you want. Buy power steering hose (return line), cut to the length you need. This hose won't deteriorate from the fluid.

 

I used trans line I bought from auto zone, the clamps I used are the type that are made specifically to not cut into the rubber the more you tighten them, I routed them the same way the hard lines used to be and securedthem with rubber coated brackets , it looks neat and clean and no rubbing, also no leaks at all.