Jay, Glad you are getting some positive results. I’ve done some 514/532 inch BBF builds and they usually have 12-20 degrees of split depending on the combo. That cam does seem huge for the hp peek rpm, irregardless how good the exhaust is the engine still needs the exhaust valve open long enough to let the spent gasses out. Other thing I’ve experienced with the big ford is trying to extend the rpm range higher in truck pulling applications, found out shortening the intake runners will move the hp peak around if the cam, intake, heads, etc are good enough, which it sounds like they are on your parts. That may be what you are experiencing. If you change to a shorter duration intake lobe on the cam and the Tq peak moves down and the hp peak stays the same I would point at the intake runner length. Cool stuff for sure, neat to read your progress on here. Keep up the good work!