Isn't there an AOD for a 460 pickup? My son's 94 F-250 was an AOD.
The term 400 M is being used for clarification purposes since the advent of the 400 W and 400 C strokers.
We will learn to accept the change...... eventually.
I guess we could start calling them all the "402s" as well. (But that would blow the brand C minds.)
Sort of like the last 6 years of hot rodding writers using the verb "install" as a noun replacing the correct useage "installation". Butchering the language. I have never seen this anywhere but in the "hot rod" magazines.
example: "The install went well". "We had problems with the install."