Quote:
Originally Posted by 19Fordy
Opinions will vary as you are about to discover.
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Ain't that the truth! Now here's my opinion, LOL!
I'm by no means an expert, but I want as much meat in the cylinder walls as possible. Rust and corrosion plus possible core shift are issues I'd rather not deal with. And don't forget, the cylinders are a structural part of the block, they basically keep the decks in place.
A flathead is never going to make very much power unless you spend HUGE money and do loads of work. At that point, you may as well go with an overhead-valve engine and save all the anguish. Don't get me wrong, I LOVE the flathead V8 and appreciate its smoothness, torquiness, reliability, historical significance and nostalgia, but I don't love 'em for their brute power.
Anecdotally, I've also read that post-war Merc engines aren't
that much more potent than the early 221s. I have not experienced this myself, but it seems plausible. So, is a huge overbore worth it? Not for me.