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Old 01-10-2013, 03:37 PM
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It is entirely possile that you have sixty degrees advance with the vacuum hooked up to full manifold vacuum, however this is too much. Maybe your vacuum advance is putting in too much advance. You may need to limit the vacuum advance. Try checking total timing (initial, at idle plus mechanical, at about 3000rpm) with vac unhooked and plugged. This should be 34-36 degrees. After setting total timing to 34-36, hook up the vacuum advance and read the total at about 3000 rpm. this reading minus the total advance will give you the amount of advance. Initial + mechanical + vacuum = 48-52 degrees.
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