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New jets

David Herrera
in Pontiac Performance Discussion/Questions

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I have a 1970 lemans. I changed my exhaust from the muffler back. It is a Cherry bomb muffler with a 2.5 tail pipe. It has a rochester 2gv 2 barrel carburetor on it. Should I change the jet 1 or 2 sizes bigger or should I just adjust the air/fuel mixture?

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    Just adjust the air/fuel mixture first...Then go from there...

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    Just a 1/4 turn on the air/fuel mixture screws to make it richer and it ran great. Thanks. 

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