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Old 07-26-2018, 06:52 AM   #2
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Join Date: May 2010
Posts: 7,060
Default Re: 1936 Spark Plugs

Ford last used the C-7 plug in early '34 model V8 production. The Champion 7s had a different heat range and were used from early '34 through '37 and partially into '38.
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