I know on my 'old' Jesel belt I had to skip a tooth to get it to 'retard' the cam. I think that was common. I don't think that cam will be too far off at all! But the motor might want it more retarded. What were the numbers at .200'? What springs are you using? I'd expect it to make about 900HP ( as intrepreted by "wallace") I'm assuming this is a different dyno than last? Regardless good luck!