Doesn't seem like it. Since 1956, it appears 5000 yards passing has only been accomplished 13 times. With Case Keenum (3) and Graham Harrell (2) having five of those. LINK

The closest seems to have been Colt Brennan from Hawaii with 5549 yards passing and 366 yards rushing.

Dak doesn't need that many yards though. We don't have that type of offense. I think 4000, 1000 and 10 wins will get him the Heisman.