Heat are given the best chance currently at 5/2. 2011 champ Dallas is 5th (10/1), behind the Lakers (11/2), Bulls (6/1), and Thunder (8/1).
Wolves are given 100/1 odds, tied with the Cavs, Pistons, Warriors, Bucks, Kings, and Wizards. That group only has the second-longest odds, though. Toronto brings up the rear at 150/1.