Is the 383 a better engine, or does the 440 just have more displacement?

Jeremiah said
Up to around 520" my vote is 400 block all the way. Bigger bore, stronger block, essence of rich corinthian leather.

Much more room for an air filter with a low deck also.

Speaking of leather. I have a candle I bought at a distillery that is Leather and Tobacco scented. Damn is all I can say.