transmission line question

[chevystudz7105]

i did a search on here but didnt find anything.  i was just curious what size transmission lines are needed for a th350?  i pulled out the manual trans today and in the next few days ill be putting a th350 in it but wasnt 100% sure on the size i line i need.  i believe its a 5/16 th line isnt it?

[BIG DOG]

 SHOULD NOT MATTER   SOME GUYS RUN UP TO 3/8        ( MORE FLOW )  THE  RADIATOR  ONLY FLOW SO FAST     
  I RUN 5/16 LINE       

[chevystudz7105]

thanks  just curious  cuz i should be getting my trans back soon and i gotta run all the tranny lines and wasnt sure  what size to run. 

[Bowtie972]

   5/16"

[bigdawg41]

always a good idea to add an aftermarket cooler.

[Norm Henderson]

ive got 4 and there 5/16ths, i drive a ford tho

[chevystudz7105]

yea i plan on running an extra cooler other then the one thats on the truck right now

[Eroq]

bigger the line more fluid can flow..

[Hammerlane]

bigger the line more fluid can flow..

Thats assuming you don't have to install an adapter to fit the radiator and/or cooler.
Anywhere in the system, if you reduce the dia. of the line (ie... adapter, reducer, cooler tubes etc...) you restrict the flow of fluid,,,, law of phyics.