Ive been researching the timing set info while Im replacing my water pump. I cant tell if this is a stock pre 72 timing set or an aftermarket single roller or if its pre 72 at all. I have not set it to tdc on cylinder one yet but noticed the mark on the crank is aligned with the keyway. Anyone recognize this set?

 

Oops I forgot to post the pic. After looking at other pics it looks to me like the pre 72 crank gear. Any other opinions?

 

Maybe I posted this in the wrong place?

 

If the cranks keyway is right in line with the cog then it's zero.

 

It is a straight up set (no retard). But the style is early model (not a roller chain)