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Old 09-04-2020, 04:48 PM   #17
Synchro909
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Join Date: Jun 2014
Location: Melbourne, Australia
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Default Re: Model A Distributor with Centrifugal Advance

The advance built into these distributors is set for a standard engine with a standard head. We know that as compression rises, less advance is needed.
Does anybody have an idea on how much less advance is needed for a 5.5:1 head? Same question for other after market heads that are available all the way up to about 8 or 9 to 1.
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