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Old 01-12-2013, 11:15 PM
cadillacdave1 cadillacdave1 is offline
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you may have a problem with the ignition if it shutters and shakes at cruise. You said the carb is pig rich at idle. It sounds like the carb is pulling through the idle circuit. If you turn the idle mixture screws all the way in the motor should shake or turn off. If not the motor is getting gas from somewhere else - improiper adjustment on carb. If it was a holley style I would say the secondary throttle plate is adjusted wrong, too far open revealing too much of the transfer slot. With edelbrock carbs you have toi get the right combo of metering rods and springs. If this does not work then you must change jets and start the fine ruining with the metering rods and springs again. Good luck
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