PHR tests correction factor, 'splain please.

[Damn True]

hmm.. so instead of peak being 6500 you would like it at 6100? Sure, it's all in how the cam is designed. The cam I am running is by no means on the radical side. The graff shows it made 560hp at 6000 RPM. That's only 13 less hp for a 500rpm drop. Personally I really don't feel the need to have more than 450 rwhp. Much more than that just smokes tires (which is fun too.. lol)

Exactly. I would prefer to give a little more safety margin to the valve train and bottom end by not spinning the thing quite so high.

I believe test 2 was just the OE cam, FAST intake, throttle body, AFR heads and headers right?

Would a little more lift/duration against the OE cam via higher rocker ratio drive the peak up or down?