Good info, thx!
Any suggestions what to run a CX-3 cam at in this Wiseco 836?
I'd recommend splitting the increased dwell time across the intake-exhaust degrees, based on the intake valve.
For example (I don't know the CX-3 specs, but same idea), if the dwell is quoted as being "30 degrees more than stock", and stock is 5 degrees open BTC and 5 degrees close ABC, then adjust the cam to open at (5+(30/2))=20 degrees BTC and close 20 degrees ABC.
There are other methods, which shift the power earlier or later, depending on your needs, but know this (if you understand some calculus): the area under the power curve is constant, regardless of how you shape it with the cam, for a given lift number. So...if the power comes on at, say, 4500 RPM when you set the new cam as above, but you instead shift the cam back about 5 degrees (open at 15 degrees, close at 20 degrees) then the power will also start later, more toward 5000 RPM and it peaks out higher when it reaches the max efficiency for that cam dwell angle. Since the upper RPM is mechanically limited by the valve-piston clearance, there is a practical upper limit to this: if you go above 10,500 RPM for the upper end, you'll probably need some more valve spring to keep the parts out of each other's sphere of influence...
