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Old 12-23-2003, 04:00 PM   #1
terrible_buddhi
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heat range?

I need header plugs for my 383 11 to 1 engine...it is about to be fuel injected...any idea for the heat range plugs I should be running?
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Old 12-23-2003, 05:07 PM   #2
Tom
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A step or two colder then stock. I've been running stock plugs on a 10.2:1 383 for years without problems.
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