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It's hard to say without exact numbers on the heads but for what I did... 410 HP @ 6000 RPM and 409 TQ @ 4500 RPM. So somewhere in that neighborhood would be a good guess. :cheers:
Desktop dyno is a waste, thier are too many variables that it can't calculate and everycar is diffent, its about the equvialate of a G-tech.....
my .02
I wouldn't call it a waste; I definitely wouldn't take its results as Gospel either. As long you have a good understanding of how an engine works, I think you can get a rough idea of what your power curve and numbers might be. It's a lot better than just throwing out numbers like, "Well with these heads, this day long duration cam, and this exhaust system I should have 500 HP"
With desktop dyno you can a way better idea. I mean if DD is saying you have 550 HP with your setup. And a guy with your same setup is 430 HP from a REAL dyno (~360RWHP). Then you know something is really off. Just got to use your head on this stuff. My $.02 + Your $.02 = $.04 :cheers: