Thread: Timing Vortec
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Old 03-30-2017, 09:33 PM   #17
garyd1961
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Join Date: May 2016
Location: Henderson NC
Posts: 975
Re: Timing Vortec

If that distributor is like my MSD you need to run the vacuum advance on manifold vacuum and use a vacuum advance limiter plate with that distributor. I haven't installed mine but if you hook to port vacuum above the butterfly plate it will have way too much advance.
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