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Old 06-28-2019, 11:47 AM   #27
tubman
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Location: Minnesota, Florida Keys
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Default Re: 59AB Cooling System Advice Needed from the Experts (not an overheating issue)

Drilling the impellors may have worked for an all out race engine, but it's not a good idea for a street engine. Back in the day, we did a lot of "things the racers did" in the hopes that it would help, but most of the time they just caused more problems.
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