Like Randy said, the numbers produced are so subjective. You have a baseline now. Use the same dyno now to chart your progress in hp/tq you pick up. Don't get caught up in the actual totals, rather the gain mod to mod
If you really *must* be a hero, then go find a superflow dyno, and ask them to graph you at 'DynoJet Corrected' numbers. Your stock LS2 would probabaly be about 360 rwhp on one of those.
agreed. it's all dyno. My V made 380/376 on a Mustang 4WD dyno, which is dialed in for VW/Audi/Porsche at AWE Tuning in Willow Grove, PA. basically stock, AFAIK, since I'm not the original owner... with Corsa exhaust and LPE intake that I added. ::shrugs::