Thread: Courtney
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Old 05-20-2008, 08:08 PM   #38
Tru2Chevy
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Quote:
Originally Posted by Jersyboyy View Post
Ho do you propose i fix my running lean problem? Iv read all over TGO that a 650 is a good upgrade for a 305, but for even a mildly built 350 you need at least a 700-750 carb.
Your lean condition is caused by not enough fuel being present....the carb numbers you are referring to (650, 700, 750) are the cfm ratings - meaning how many cubic feet or air can move through them per minute. Increasing the CFM without adding more fuel will only make your lean condition worse.

Tune the carb you have, after you fix the exhaust.

- Justin
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