you can make big power out of an engine designed for much less, however, the more power you add, the quicker the motor will let go. of course, if you build up a turbo car that is capable of making 35 lbs of boost and 700hp, but you never run it over 3000rpm w/ no more than 5 lbs of boost, its gonna live a lot longer than if you were running it at max all the time. (that focus was supposedly built by Duttweiler is a show car, and NEVER gets run hard)
Terry is talking about making a motor that will live at the mentioned rpm, and I would estimate up to the 450-500hp level. some engines do live longer than others, for any number of unknown reasons. Heck, saleen went through 6 s/c'ed Contour motors at 400-450hp in a short period of time before they gave up on doing a Saleen Contour (because they didn't build up the bottom end as necessary)
what good is a 500 horse motor that may blow up at any second? and sometimes motors
