Timing marker covered needs to be on other side what do i do?

[Dana67Dart]

The mark will be a 90 degrees from the mark you have

My experience says different.

My 67 has a 70 up timing cover when I check the timing on the 67 mark it is at what I set.

If I choose the correct cylinder to check on the 70 timing cover it comes out not the same. IIRC seems like it is 5 to 10 deg advanced or retarded don't recall which.

 

[Oldmanmopar]

I believe it was Mopar performance sold a damper with 4 marks at 90 advertised to be used on any year and to adjust valves as per their decal.