More than likely, either the needle seat(s) is/are not tight enough in the top and the float bowls are over-filling or a float is defective and taking in gas(only if it feels heavier than it should and you probably already know it is not)or you are missing one or both of the seat gaskets. Float level too high is the last possibility, David.
ThermoQuads:stock, street/strip and race;
800/850 cfm's, 860/910 cfm's and 1,000 to 1,060 cfm's.
New parts for all OEM 1971-1984, Competition Series and SuperQuad carbs and custom fabricating.
Carbs bought and sold. Consulting on pre-purchases
so you get the right carb the first time.
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