75 Dart Swinger Transmission to Radiator lines wont come off

[JTNorton]

1975 dodge dart automatic
I cant get the trans to radiator lines to budge without moving the line itself. Tips, tricks, or advice?
I got a new radiator and would really like to be able to put it in.

 

[BWDart]

Heat always works for me

 

[limegreen70]

I have had that happen to me. I had to use 2 wrenchs, 1 to hold and 1 to turn.

 

[JTNorton]

Heat always works for me

MAP torch?
Because that's what I'm gonna use.
Thanks, I don't know why this thought process didnt occur to me.
Does the big nut unscrew seperately from the plug screw?
I can't get that figured out. I'd cut it if could.

I have had that happen to me. I had to use 2 wrenchs, 1 to hold and 1 to turn.

Tried that, it's either turning the whole line, or both the plug and the line. If I try to hold it, the plug's bolt pattern starts to strip.
Sad day. Ima try the MAP torch.

 

[67Dart273]

ALWAYS use two wrenches

 

[TrailBeast]

ALWAYS use two wrenches

Yea, and preferably line wrenches.

If need be the ends of the line can be cut with a tubing cutter and the fittings in the radiator can be replaced with compression union type fittings.
These are what I used when I swapped the lines and fittings from 5/16 to 3/8.
Been about a year of daily driving with zero problems with them.

 

[72Dart6pack]

A little heat and two wrenchs and you will be fine. Go slow.