How to Pick Your own CamShaft better.

I just finished watching that video, thanks for posting! Helped me wrap/mold/meld hammer my head around engines a bit better.
Waiting for part 2.
He has 3 videos on rebuilding a 440.
Here is part 1

Oh when hes talking spring pressure and how that plays against crank rotation...he states like 5000 lbs approx. Doesnt sound right to me. All 16 springs arent compressed at same time?

I was surfing around YouTube today, and found this video
The most complete explanation i have seen in one video.

Two Warning: It a long Video and it gets kinda technical at the end. But for someone that hasn't done a bunch of research on the science of a camshaft.......and want to learn some. This Is For You.