The Association had been in favour of admitting Frankston for 1965, but the club failed to get a clearance from the Mornington Peninsula Football League.
It was the end of a ten-year expansion plan which the Association had first announced in 1956 to increase the size of the competition from fourteen clubs to twenty.
The following ground changes occurred in 1966: The Division 1 home-and-home season was played over 18 rounds; the top four then contested the finals under the Page–McIntyre system.
The Division 2 home-and-home season was played over eighteen rounds; the top four then contested the finals under the Page–McIntyre system.
The team was coached by Perc Bushby (Coburg)[20] and was captained by Keith Burns (Brunswick).