Thread: Spark Plugs for 390
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Old 05-30-2011, 10:40 PM
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Bear 45/70
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Originally Posted by Ford428CJ
Also the added bonus is, they have a wider heat range of plugs to play with and the other brands for 18mm dont! Unless you run aftermarket heads with 14mm is a different story all together.... JMHO
Even in my race 428CJ I never had to run anything colder than a Champion F9Y. So that is not a plus for a street machine.
 
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