The Fighting Illini won for the second time in five games and picked up their second road victory in conference play this season.
Minnesota's Blake Hoffarber forged a 55-55 tie by scoring on a layup with 7:28 to play, but Mike Davis gave Illinois the lead for good 17 seconds later.
Both the Illini and Golden Gophers have 16-8 records for the season. Illinois improved to 6-5 and Minnesota slipped to 5-7 in Big Ten Conference play, where unbeaten and top-ranked Ohio State has a three-game advantage over Wisconsin and Purdue.
Davis and McCamey combined to make 13-of-25 shots from the field while the rest of the team could make only 11-of-29. Trevor Mbakwe led Minnesota with 17 points.