Has a College Football game ever ended 146-0?
Exactly once. On October 22, 1904, Minnesota beat Grinnell 146-0, and no College Football game before or since has ended that way. When it happened it was a scorigami, the first 146-0 in league history.
That makes 146-0 the 1819th most common final score out of 2,215 that have ever occurred in College Football. One point away, 147-0 has happened never and 146-1 has happened never.