On May 11, 1992, in Game 4 of a second round matchup the Portland Trail Blazers and Phoenix Suns combined to score a playoff record 304 points. The Trail Blazers would need two overtimes to win the game by the score of 153-151. The game came down to a couple of free throws by Kevin Duckworth that put the Blazers up 152-151 with just 10.7 seconds on the clock, then with 3.6 seconds left on the clock Terry Porter made another free throw to add another point to the Trail Blazers total. With just 2.7 to go in the game Dan Majerle attempted a shot from 30 feet out to win the game but his shot fell short and the Trail Blazers were victorious. It gave Portland a 3-1 lead in the series and they wouldn't look back. The Trail Blazers took Game 5 at home to move onto the next round, after knocking off the Jazz they met the Bulls in the Finals where their run would end.
The box score is something else Clyde Drexler led Portland with 33 while Kevin Johnson led Phoenix with 35. Both teams had 4 players score 20 or more: http://www.basketball-reference.com/boxscores/199205110PHO.html