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Old 06-25-2012, 04:30 PM
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123pugsy, you're spot on w/the 36 degrees at 3000 rpm. You want the total (w/o the vacuum advance) all in as early as the engine/vehicle combo will allow. This is usually around 3000 rpm (or less if it'll let you) w/o pinging when under a load.

If more info on the HEI is wanted, you can take a look here, especially the section on ignition advance.
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