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You can purchase an aftermarket adjustable vacuum advance canister from most any auto parts store and follow the instructions for installation and adjustment.

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Q: How do you adjust the vacuum advance on a 72 350 Chevy sb?
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Is the distributor on 1984 350 Chevy the same as 1989 350 Chevy?

84 has a vacuum advance 89 has an electronic advance Thats the only diff.


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The vacuum canister can advance 24 degrees beyond initial timing.


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That should be a 350 cubic inch engine with a carburator, HEI ignition with a vacuum advance. You will need to hook up a timing light to number one (1) cylinder. That is the front plug on the driver's side. Start the engine and let it warm up. There is an indicator on the front lower side of the engine. It is marked with the degrees. Disconnect the vacuum from the advance and plug it off and then adjust the timing to the desired specs. Tighten the distributor and plug in the advance. If you do not get an increase in rpm when the vacuum is connected, then the vacuum advance is bad.


How do you set vaccume advance on 350 hci edlebrock 4 barrol camaro 1973?

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