Trans line Size

[nawlins-tim]

I'm tired of messing with my leaky trans lines that I ran when I added a external trans cooler. The simple black hose and simple hose clamps seem to work there way loose every soo often and spray trans oil in my engine bay.
What I would love to know is the correst diameter of the trans lines on MY 1980 ELCAMINO with a TH350? Ya see once I have that measurement , I think it is Earls that sells the required adapter to go to -AN Fittings and braided hose. The looks will be cool and No More Leaks. Please help!!!!!!!! If I had a descent Micrometer or any measuring device other than a tape measure I would check it myself. But thats what friends are for>>>>

 

[crucial118]

Did you flare the ends of the hard lines when you cut them? Also might want to try fuel injection clamps instead of the simple clamps.

 

[nawlins-tim]

I dont know if you read my entire post. But since I tired of my old set-up I decided to go with -an fittings. And in order to get the proper fitting I NEED an acurate measurment of the steel lines on my th350 trans. Thanks again

 

[crucial118]

My bad, but you should be able to use a sae wrench to let you know the size. That's what I do. Just slide the open end of a wrench over the steel line(start with the smallest, then work your way up until one fits). I think it will either be 5/16 or 3/8.

 

[nawlins-tim]

Anybody know the size for sure?

 

[brettlaage03]

I just bought 5/16" line for my th350 a month ago or so and it works