Quote: Peak hp was at 5700 rpm - 560hp, peak tq at 4900rpm - 559lbft.
What did the numbers look like from peak torque to the end of the pull? ie vol eff, A/F, torq, hp. Did the power fall off slowly or quickly?
Look at that other guys dyno table, it made peak hp at 5600, but only lost 5 hp at 6000. That is what I would expect.
I wouldn't expect the heads to flow enough to make power too high up (at 500+ CID), but I am guessing the MCH CNC should be enough to make peak power around 6000. And the cam should carry to that point too, IMO. Did you try a carb spacer on the intake? That should help. So you are missing only a few hundred RPM max. More duration would make more power up top, but if you are looking for 3000 rpm torque it will lose some there.
It is really just the hp number that seems low, and some of that could be the dyno comparison.
