i have an MSD Pro-Billet HEI distributer with vacuume advance. how do i adjust the vacuume advance on it to get the most amount of advance and the most peformance?
The vacuum advance on an 8365 isn't adjustable. There's an advance limiter and a vacuum advance lockout kit. Here's the manual:
http://www.msdignition.com/pdf/8365_frm%2026045.pdf
Tommy
http://www.msdignition.com/pdf/8365_frm%2026045.pdf
Tommy
AFAIK, yes. They usually have a hex on the vacuum can by the port. You adjust them by inserting a 3/32" Allen wrench into the port and tightening or loosening a preload spring on the diaphragm. This only adjusts the rate of vacuum advance, not the amount. The kits usually have a vacuum advance limiter plate that is used to control how much timing advance the vacuum gives. Most of the kits come with springs and sometimes weights for the mechanical advance, so it's basically a total recurve kit. Here's a good, basic instructional article on the whole job:
http://temp.corvetteforum.net/c3/joeveto/Vacuum_Advance_and_Recurve.shtml
Tommy
http://temp.corvetteforum.net/c3/joeveto/Vacuum_Advance_and_Recurve.shtml
Tommy
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