One more......
I had a 9.7:1 360 with 230cfm J heads on it, small solid cam, LD340, headers, 750 Holley on the dyno.
It absolutely crushed the 8:1 360 with the SM heads and XE268 cam.
DD for this one has the TQ 17 too high, and the HP 36 too low, and peaking at a much lower rpm than it actually did.
It’s just not consistently accurate enough for me to put any faith in it.......which is why I don’t base any decisions for planning a build on it.