Route 34 - Port Macquarie to Armidale.

Drove through there 4 or so years back, winding road with some good climbs and downhill into valleys. Towed a 2 tonne van through there behind a Triton ute, no problems just a bit slow.

The elevation rises to around 1100metres.

Caravan Park at Walcha is nice! to be honest I would rather stay there than Armidale.

Cheers

You have 30 kls of winding roads that do have a long steep section just before Long Flat, but taking it easy is no problem. Semi trailers use this road with no problem. Nice place to stop is at the bottom at LOng Flat. Has A nice quite pub and bbq, give the brakes a chance to cool down

You did not mention size and even better weight of caravan, letting us know tow vehicle would help as well.

The climb is not as steep as the Dorriago road but is much longer. Not as steep as Cunningham Gap either. About as steep as the New England Hy out of Tamworth to Armidale.

Unless you are towing a heavy van with a small vehicle it should be OK.

Aspley Falls just before Walca, is a great overnight stopover place. Flushing toilet and great walks to the falls from the camping area. Then the trip to Armidale is a cakewalk from there the following day. Camps Book NSW number 324. Make sure you pay the site fees as the ranger always come around. Lots of firewood as well for a campfire. It get very cold here however as it is in the mountains.Camp spots 322, 323 and 325 are very noisey so do not stop in them

You will have no problems what so ever provided your town vehicle can legally tow your caravan.
As stated above semi trailers do it all the time, though it is not noted for it's heavy vehicle traffic.
The curves will slow you down more so than the climb/ gradient.
Both Thunderbolts way (Gloucester- Walcha) and Waterfall Way (Bellingen-Armidale) have steeper gradients which caravans and Semis have no problems with.

Thanks to all of you who have responded to my request for info.