Lets build a CHEAP(!!!!!!!) bracket motor!

I dislike the statement that there is no replacement for displacement.

There are several documented replacements, like forced induction for one.

There is never a real world case of "all other things being equal".

In theory, yes, but in reality, no.

BTW- you proved the point by explaining about the 340 with it's larger bore.

I'm agreeing with you!