Single or dual vaccuum advance

CrashBob

Well-known member
While looking up a rebuilt Duraspark dizzy, Advance Auto offered one with single vaccuum advance or one with dual vaccuum advance. Which one would I want for my stock '65 Mustang 200 IL6.

Crashbob
 
Get the single vacuum advance, simple = better. Fewer things to hook up, fewer things to configure, fewer things to trouble shoot.


Hook up the single advance to the intake log for correct vacuum signal.

-ron
 
dual vac has one side of the diaphram hooked to ported vac, and the other side hooked to manifold vac, thru a temp controlled ported vacuum switch in the t-stat housing. Go with the single, and hook it to manifold vac. Like was said, simple = better.
 
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