Do you mean 1 3/4" in diameter or circumference? I've never transplanted anything but colonizing sprouts, so I don't really know, but I'll give it an educated guess.
If it's nearly 2" in diameter, you'll have a hard time transplanting it, and it MIGHT kill the vine - you might also find new sprouts arising later from roots that remained in the ground.
It'll probably survive, provided you cut it back on top a lot when you replant it to balance out the root loss, plus keep it consistently moist for several months.
My pipevines have colonized all over the place - now I just need some pipevine swallowtail cats!
Sherry

it is diameter-straight across.

After a year of no butterflies on my pipevine I found 19 eggs on Tuesday. I was thrilled!! Penny

IMO, pipevines can be slow to establish. I don't know that I would risk it. Can you take a cutting once it grows and try to propagate a new plant to locate elsewhere?

Susan

Funny thing I dug my pipevine up to move it and it did well but where it was a new pipevine keeps coming up I just keep moving it and another so now I have 6 hehehe guess I left some roots but it was sweet suprise.
Angie