vacuum advance movement

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frcc

Post subject: vacuum advance movement

PostPosted: Wed Mar 09, 2011 6:55 pm

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4 BBL ''Hyper-Pak''

Joined: Sun Feb 27, 2011 7:15 am
Posts: 37
Location: Texas, USA
Car Model:

how much should the internal parts of the distributor move when max vacuum is applied to the vacuum port at the distributor?
I have a 72 B-300 /6 with points and was wondering if it was working right as i am troubleshooting some engine performance issues.

thanks in advance

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FRCC
(9) slant six engines / + misc parts for same.
1969 D100 318 4 spd

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Eric W

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PostPosted: Thu Mar 10, 2011 6:27 pm

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Turbo EFI

Joined: Sun Nov 03, 2002 1:49 pm
Posts: 2445
Location: Lubbock, TX
Car Model:

Dosn't move much, maybe a tenth of an inch if that. Dosn't take much movement to advance the timing.