I have been maintaining a 1964 Nova 230 with Powerglide for a customer for about 10 years now. This car has had a intermittent miss at idle sense they have owned it. I recently rebuilt the engine and thought finally it would idle smooth. Well three rebuilt carbs later, it still has a intermittent miss at idle. It is not like one cylinder is missing but more like all cylinders cut out. Being an automatic trans this can be quite annoying. This car has a Pertronix ignition which I temporally removed and installed a HEI distributor. I hooked power for the HEI directly to the battery, to eliminate any wiring problems. Still no better. I still believe it is carburation that is the problem but I am at a loss to know what I should do next.
Any ideas? Thanks, Dave


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