Andrew Jones is running down the greatest ACC teams of all time. In a two-way tie for #31: UNC '77 and Georgia Tech '85.
So who's best? There are only a few candidates: State in 73-74, UNC with Worthy, Jordan and Perkins, and Duke 91-92. Back-to-back is a strong argument.
We might quibble with UNC '77 being this low. That was a very good team.