Timing Mark Dilemma

Dot to dot is ALWAYS the way I do it simply because it is far easier to see when they are properly aligned. Just turn the crank one turn, and you are on TDC again, no1 ready to fire.

Another thing, and Rob maybe you know? "Back in the day" cams were often checked at "split overlap." This means when either 1 or 6 is on the opposite stroke from firing, the exhaust and intake are both equally open. That is, dot to dot, no1 valves would be "split", and 1 turn around, no 6 valves would be split. THIS MAY ALWAYS HAVE BEEN a myth and incorrect, as nowadays with the cam timing used, there "is no" split overlap that is correct so to speak, with V8s. I don't know about stocker slants, 4's, or other 6's.