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There are pretty exhaustive threads on his subject. It really comes down to what you are running for a cam, compression and whether or not you have iron or aluminum heads. Most seem to run 10-12 static with 22-24 in the distributor for a total advance of 34-39 but some as much as 39. all in by about 2800. Your 385 series engine may like more.
Gasoline grades and operating temps are also factors. My 428 liked a blue spring and a light silver spring. My 427 likes more sooner and will make the most power with a ton of advance due to the shape of the combustion chambers / pistons.
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michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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