nice to see this again,
read the original article just as i was getting into bikes back in 79', it was so detailed and well written that i kept it
its buried in my collection somewhere.
The tip of drilling 10mm holes in the head and block was something that i remembered form that story and applied in my motor.
I found it quite interesting that the cams where not that wild, 260 duration, same numbers as the megacycle i am running in my 500.
TG