Bosha, who tied his career high for points, made 7 of 10 field goal attempts and had four steals. Kevin Booze had 14 points, Anthony Holliday added 13 and Tyran de Lattibeaudiere chipped in 11 for Lamar (8-7, 2-1 Southland Conference).
Lattibeaudiere drove for a layup to break open a tight game and start a 14-2 run midway in the first half. Central Arkansas could not answer and the Cardinals drove to a 52-29 lead at the break.
Lamar, which made 8 of 21 3-point attempts, made 34 of 64 shots from the floor while limiting Central Arkansas to 22-of-46 shooting.
The Cardinals had 14 steals and 22 assists.