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Old 08-24-2011, 09:21 AM
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chevyart
Senior Member
MASTER BUILDER
 
Join Date: Mar 2008
Posts: 173
Default boosters working early

been racing my car for 15 years and ran fine. just happened to look at the carb one day at idle (about 1200 RPMS) and noticed a steady stream running out of the boosters( NOT a little mist) ii i thought this shouldnt be happening. rebuilt the casrb and still get same stream at high idle. put on a new 750 with a race center section and still get the same gas running at high idle car only has a vacum reading of about 5-6 inches of vacum at idle(in gear) tried a 6.5 power valve in front and also tried a 4.5 and a 3.5 power valve and still get the same result. holley says this is ok as the carb is probably getting a signal from the engine to make this primary booster circuit go to work early. juts are right size and the floats are adjusted right and needle and seats are new.. new motor is going in and i just feel uncomfortable with this situation. new motor may have a whole different vacum reading(itsa a radical 377 cube in. sbc) coild anyone explain this whole situation to me and tell me if you think everything is normal. the car always ran great, just dont understand all that gas at high idle thANKS ART
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