Fresno State (11-12 overall, 4-5 WAC) led from start to finish in its second win in six games.
Fresno State led by as many as 27 points with 13:27 remaining in the second half before Louisiana Tech crept back into the game with a 15-0 scoring run.
Louisiana Tech pulled to within 68-58 on Tims' 3-pointer with 2:02 left but could get no closer, choosing not to foul Fresno State in the final minutes.
Nedeljko Golubovic had nine points and seven rebounds for Fresno State, which enjoyed a 20-4 edge on fast-break points and shot 40 percent (8-of-20) from beyond the arc.
Miller led the way with five 3-pointers, accounting for all of his field goals. Bell finished 7-of-10 from the field and added six assists.
Fresno State led 38-17 at halftime, holding Louisiana Tech to 25 percent shooting in the first half.
Miller had 11 points for the Bulldogs. Bell added 10, highlighted by consecutive layups that made the score 25-11 and forced Louisiana Tech to call timeout with 7:09 left.
Fresno State barely looked back after opening the game with an 11-0 run.
Gibson scored seven of Louisiana Tech's first nine points and had an assist on the other basket.
Dwight O'Neil, expected to be Fresno State's leading scorer this season, saw his first action since breaking his wrist in a Nov. 17 loss to Cal State Bakersfield. He finished with three points and two steals.