8 3/4 rear end question

Dana67Dart said
Rotations x2 for open
Rotations x1 for trac lock

1.5x2 =3

2.94 open my best guess

With an open diff rotate the tire 2 revolutions and count the yoke revs.

If it's trac lock rotate the tire 1 time.

You got 1.5 yoke revolutions for 1 tire revolution so multiply it by 2 gets you 3. And 2.94 is the closest 8 3/4 gear to 3