Destroking an Engine

The slant guys say their same head on different blocks could produce the same HP, but at different RPM's, 170 would have to scream to produce the power of a loafing 225. Guess it depends on what you want it for. Class racing or oval track. The 273 was always touted as a fast revving small block but the 318 is the same motor with a larger bore, 340 as well.