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Old 06-06-2020, 11:16 AM   #14
Gregski
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Join Date: Aug 2014
Location: Sacramento, CA
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Re: Need help with my first 350 sbc

if the shaking smooths out ie goes away at higher RPMs say 1500 or higher than most def it's a vacuum leak, you can plug all the ports on the carb with rubber plugs just as a test, but then it can leak from the base plate especially a crack in the back where the big port is for the brake booster
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