I have gotten 600+ HP from a small block (real dyno figures, not bench racing pipe dreams) but the engine only lasted about 1,000 laps around a 1/2 mile banked oval track. If you're willing to rebuild the engine about every 500 miles, go for it!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!