Has an AFL game ever ended 74-40?
Exactly once. On July 18, 1908, Melbourne beat Sydney 74-40, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 74-40 in league history.
That makes 74-40 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 75-40 has happened 2 times and 74-41 has happened 1 times.