While there's no substitute for cubic inches, sometimes you have to work with what you got.
My old 275hp 327 has plenty of low end, stock, and the next rebuild will enhance it. All the regular stuff: intake, RV cam, headers, a little head work, etc. I'm after a driver getting near 20mpg, with that sbc surprise when you grab a gear and drop the hammer.
Big blocks have lots of torque but they're heavy and expensive. 350 is probably a better block, but the wife won't like it if I bring home ANOTHER engine! If I had an unlimited budget, I'd go for a 500hp 400.
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