Anyone Know of Online Engine Dyno Software so I Can Test a Few Combos?

I'm a little curious on just how far off these can be. I'm messing around with a stock internals 318 and pulling off nearly 400 hp with just Edelbrock heads and intake and a cam swap with 8:1 compression. That seems like a pretty lofty estimate for such low compression to me. If it's true though I'm going to have a fun summer, lol =P.