Hemi Yes or No

A 340 (or should we say a 408 or larger) with aftermarket heads
that don't even resemble the originals just isn't a true comparison.

I'll admit that you can make some big HP that way. Bore and stroke,
rod ratio and angle and bobweight can be made the same in a lot of
dissimilar powerplants....but, compression ratio and camshaft timing
being the same, the true differences are going to be the cylinder heads
and intake design. By comparison, the stock A-motors were deficient
in the cylinder head area....Not picking at you; just stating a fact.

The modern Indy or Brodix cylinder heads are a Godsend and the basic
block has proven to be strong enough and able to accomodate big
cranks for big cubes. I see that Indy even has a 440 small block now!

From my experience when these things were new and pure stock, a
383 B-body would beat a 340 A-body every time; not by much, but by
enough (unless there was a Dork wheelin' it). A 440 B-body? Don't even
try it.

Modified, a 340 is as good as anything and I'm sure there are a ton of
them that are right here on this forum.

Interesting discussion, though I wish you guys weren't getting so
cheesed off. You're really comparing apples and oranges (from the
same tree). Have some fruit salad and chill out.