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Re: 70s CHEVY 350 CARBON FOULING PLUGS
The module will NOT keep the HEI from operating. It will however kill the timming advance and coil dwell time over 2500 to 3000 rpm. Have you noticed it hesitating or stumbling above 2500 rpm? If it were me I would probably replace the distributor anyway. HEI's are not the best distributor out there, expecially on modified engines.
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