vacuum advance

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06-27-2014, 07:46 PM

my68

Thread Starter

Join Date: Oct 2009

Location: ohio

Posts: 16

vacuum advance

does anyone know what the vacuum should be at on a fairly stock 302, mine is around 12 not sure what it should be thank you

06-27-2014, 10:35 PM

barnett468

4th Gear Member

Join Date: Nov 2013

Location: arizona

Posts: 1,398

hi;

unplug your dist vacuum, rev the engine up and see how much total advance you have. it should be around 28 - 32. this will help us guess at your vacuum.

06-28-2014, 01:22 AM

Gun Jam

Moderator

Join Date: Dec 2005

Location: Hills of California

Posts: 5,208

manifold full vac reading should be in the 15s to 17s as in inches of mercury (InHg)

Vac advance should be around 10 deg above 10 or 15 InHg.

-Gun

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