1968 340 timing

67Dart273 said

I'm not familiar with those marks someone added them? OEM timing mark should be one big deep slot clear across the balancer

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Same here not familiar, and means nothing to me.

Yur gonna have to get dirty and find TDC #1cylinder, on compression stroke, and find out exactly where your balancer mark is. You may have to make a new one or install a timing tape.

I agree about most timing lights not working with an MSD while it is Multi-Striking below ~3000 rpm. To check the power-timing,you're gonna have to rev it higher.