Cam degreeing help me understand!

DartFreak75 has the whole crew working on this "Cam Degree Tutorial" and he is the Boss Man !

Everyone is contributing good info. What I find interesting is when they are advancing their cams by 4° they are working usually with the 3 keyway lower cam gear and turning the lower gear to the next keyway to get the 4° Advance, simple enough.

So when his upper much larger camshaft sprocket was miss marked by just one tooth that sent the actual Cam out of time by as much as 20° just by being 1 tooth off.

So the thing is the lower gear is driving the cam like a gear reduction taking many turns to turn the camshaft. Where as the upper larger Camshaft Sprocket is direct drive taking very little movement to turn the Camshaft many degrees.

So this is why it was so critical that he caught this upper Camshaft Sprocket Miss Marked problem.

Fascinating !!!