Has an AFL game ever ended 166-70?
Exactly once. On September 4, 2009, Adelaide beat Essendon 166-70, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 166-70 in league history.
That makes 166-70 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 167-70 has happened never and 166-71 has happened never.