10 sec. 318?

So I was just messing around with a desktop dyno program and came across something interesting. I noticed that if I go the blown route, the stroker kit seemed to have very little effect in hp gains. It moved the powerband around some (I think it basically just shifted the curve over maybe 1000 rpm), but didn't seem to add any real hp. Does this make sense to anyone else or is the program just sort of off? It also seemed strange because it had pretty much any 318 combo I was looking at losing power past 5-6000, and I thought these were supposed to be high winders... If the stroker thing is true though I'm praying that my car has a forged crank in it already, lol. Otherwise, I may have to give Jeremiah a shout on some of those parts =P.

EDIT: My bad, the stroker moves the power lower in the rpm range. Duh, I should have thought about that first, lol. However, it actually drop 50 hp off unless I'm missing something else in the setup.