errr just found 2 cents,

what started all this was someone saying where the cam is in a pushrod engine as "normal". the proper term is "buried cam", that would saved the whole argument.

i think yes you can make some good power from pushrod engines, but they are never as durable and drivable for the same amount of power as multivalve designs.

dont look at the Gen 111 as example, because it is 5.7L !!! and way bigger than anything japanese that makes similar power.

the great thing about old pushrod motors like the A series is they are simple enough to work on yourself to do any job. with any new car say 5-10 yrs old u cant touich it a whole lot, even if u had the right computers and software etc...