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Old 09-19-2018, 07:46 AM   #6
aerotest
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Join Date: Jan 2018
Location: TN
Posts: 104
Re: Proper ignition timing?

That engine shouldn’t require 24 degrees of advance at idle. Cylinder head chamber design is the primary factor there and you don’t have anything out of the norm. Do you have the vacuum advance hooked up?
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1969 C10 Suburban Custom (Factory 396/TH400, survivor with no rust)
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