Maximum advance curve on my 360

FWIW, I am running 10.6:1 in my 360 with a XE268H cam. I run 33 total (magnum heads like a little less total than open chamber 340/360 heads) with 15 initial. The total is all in at 2800 rpm. My cranking pressure is 180-185 psi.

This engine runs fine great on 93 octane and will run with no audible ping on 89 octane.