Sean, in my mind it’s a dyno/facility thing in this case.

I’ve had my own motor show over a 60hp spread between two different dynos, along with quite a few other engines I’ve tested, that had been tested somewhere else, where the sheets looked different enough you wouldn’t even guess it’s the same engine.

What I’m saying is, in my 33 years of dyno testing....... I’ve seen drastically different numbers, gleaned from different dynos, often enough to acknowledge it’s a real thing.

I still say the right course of action for Bob is to just put the motor back in the car and let the timeslip be the judge of whether the motor picked up with the new cam.
It’s just a new cam, not a new “combo”.