David, did it just recently start taking that long. With warmer weather, it should be quicker to normal idle RPM. Might be your electric choke heating element giving up the ghost. Could be a bad ground or hot lead connection to the choke. Try adjusing it first. I think counter clockwise lossens the choke spring, but don't bet the farm on that. Take off the housing (black round plastic) and look at the spring to make sure. Mark where it was at before you do that. Then you'll be certain which way loosens the spring. You want the choke off as soon as your car will drive decently for good gas mileage and fewer emissions.
Rev
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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.
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