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Dual vacuum advance on 302 with AC

murf104

Well-known member
Joined
Feb 2, 2003
Messages
274
I am new poster, but long time lucker. Trying to figure out if a 302 with factory air conditioning did or did not have a a distributor with the dual diaphram vacuum advance unit. Several sources indicate that only the single diaphram unit was used, but looking at some pretty original examples it seems that at least some have the dual diaphram. The car in question is 155374, build date of April 04, has PS, PB, AC, C4, Swing Away, 3.00 axle. If some of you could checkk out how your car is equipped and share the information it wold be a big help. Thanks
 

rvrtrash

Well-known member
Joined
Apr 25, 2003
Messages
3,649
Mine's not in the shop at the moment to verify, but I'm positive it's a single advance distributor (302/auto/air).

Steve
 

franklinair

Well-known member
Joined
Mar 1, 2007
Messages
4,740
What does the shop manual and/or vacuum diagram say? I seem to recall dual vacuum for an A/C, A/T V-8.

Neil
 

GTCSMustang

Well-known member
Joined
Mar 16, 2003
Messages
719
1968 302-4V Mustang Auto (with or without air) had a single vacuum advance. 4-speeds were dual.

Scott
 
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