Back to the subject of 500hp 318's? Unless you're running a stocker or a ci limited class why would you attempt it? 500hp is easy with a 360 block, a 4" crank, decent heads and a easy to live with cam. IMO it would be an all around more fun package to drive too. Plus in the long run it would probably be easier on the pocket book.
I do like to watch high hp short stroke small blocks run but have no interest to build one.
Why does it matter people do all kinds of things for all kinds of reasons, why build /6 or 273 or 318 or any small block for that matter why ford guys build 289/302 or chev guys build 283/327 or LS 4.8l/5.3l, why build anything smaller than a 440 since it's readily available and the biggest factory displacement and be able to be built to over 540 cid ?
Why build a 408 when we have 400 and 440 even a overbore 383 is close in displacement and with a 440 crank is bigger than 4" stroked sbm?
The thread is Big horsepower 318 builds