4L70E Cooler Line Size

[572Camaro]

BB,
Don’t change a thing!
3/8” diameter will work fine.
I didn’t ask Gordon about larger diameter.., my bad.
I chose 5/16” because:
1. Mark and Gordon both indicated it was big enough.
2. I got really tight clearance everywhere and I can get tighter bends in my tubing.
3. Frankly, it looks better..,


BRAG: we won most outstanding engine bay at Detroit Autorama a couple years back.

ADVICE: if you run “hard” engine mounts, and if you run hard lines, no need for a flex hose in between.

BOTTOM LINE: You are fine.., just shut the hood and drive it like you stole it!