The scoring was slow in the opening half as the Tigers rolled to a 12-5 lead at halftime. Shelby outscored the Norse, 21-7 in second half scoring to solidify the win.
Kendall Zoulek led the way for Shelby with 15 points, seven rebounds and four steals while Lauren Brown pulled down eight rebounds, chipped in six points and had three steals.
Molly Stewart led the Norse with five points.
Shelby rises to 8-4 and will visit Oakridge on Friday while North Muskegon drops to 2-9 and will host Whitehall on Friday.