...the problem is that desktop dyno requires intake and exhaust valve opening and closing degrees..
My DD will calculate the valve opening and closing events based on centerline degrees for intake and exhaust. The program does not "require" the data. The program will also calculate valve timing based on duration.
If I know the intake and exhaust opening and closing events in degrees, and don't know the lobe centers, the program will calculate the lobe centers in degrees.
Gnarls.