[blykins]

How much are you wanting? In terms of "streetable" engines that run on pump gas, have rpm ranges that are somewhat "sane", etc., then 600-625hp isn't that hard to achieve with the normal 427-460 sized engine.

If you want to get into some higher rpms and higher compression engines, then basically open the checkbook and pick a number.

I have several Windsor combinations that will hit over 600hp without missing a beat....all in by 6500 and running on pump gas.