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Total Timing?

BEAR

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Joined
May 17, 2023
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I have a 78 Trans Am that I'm trying to find the distributor specs for.

My Base Timing is 18*, my Centrifugal Advance is another 10*, and my Total Advance with Vacuum ends at 57*, which I think is HIGH.

Can someone help me out with what the TOTAL TIMING should be?

I can install an adjustable vacuum advance.
 
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