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Old 05-25-2010, 04:52 PM   #1
sgaylord
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Join Date: Mar 2006
Location: Sanderson, Fl
Posts: 700
Vacuume Advance Question

I have my vac advance can plugged into manifold vacuum. When I put a timing light on it there is no difference in initial timing with the vac can attached or disconnected. My understanding is with the can attached to manifold vacuum at idle I should see an advance in timing. Is this correct?

Bone stock 69 396, no headers, Q-Jet, Accel HEI dizzy. Puling 16Hg vac.

Thanks,
Steve
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