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Why does your 78 firebird with a chev 350 drop from 1500rpm to 500rpm when you shift into gear can it be the ignition timing?
Wiki User
∙ 13y ago
Unless that is an extremely radical 350 it shouldn't be idling at 1500 rpm in the first place. It should idle around 800 rpm and drop maybe a couple hundred when put in gear. If you are having to idle it at 1500 to keep it running you do have other problems. Could be timing, vacuum leaks, or a poorly adjusted carb. I'd start with those first.
Wiki User
∙ 13y ago
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