I had a friend who used camquest 6 from compcams to calculate his hp. Once he assembled the engine and got it on a dyno there was only 15 hp difference between the dyno and camquest6 figures.
It uses the same core logic as desktop dyno I believe.
I have also learned how to make up my own cam specs by editing theirs.
Putting the flow numbers of your heads in there makes it even closer.
Rocket, I dont have a problem messing with bore and stroke parameters.
I dont know why you are having that problem.
Did you first pick the standard motor from the dropdown menus?
From there you should be able to do it.
Would I treat this thing as gospel? No.
But providing you follow things to blueprint it is pretty close!
