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#1
04-03-2003, 06:04 PM
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Please help. I've seen many posts with spark plug questions, but I hope there is room for one more. I have a 67 gto with the 400 but running #62 heads. What spark plug should I use. AC 44S are obsolete except for ebay. AC R44S is now difficult to get. Easy to get AC R43S or AC R45S but I don't know about these. ANY ADVICE? Thanks. - Steve
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#2
04-03-2003, 06:04 PM
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Please help. I've seen many posts with spark plug questions, but I hope there is room for one more. I have a 67 gto with the 400 but running #62 heads. What spark plug should I use. AC 44S are obsolete except for ebay. AC R44S is now difficult to get. Easy to get AC R43S or AC R45S but I don't know about these. ANY ADVICE? Thanks. - Steve
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#3
04-03-2003, 06:21 PM
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Give me a call i can set you up with some good Ngk's or Accel plugs. 800-517-1035 ext 6225.
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#4
04-06-2003, 09:46 AM
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Autolite 85 is the same heat range as AC 44. I've had good luck with the Autolites in a 400 with #13 heads.
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#5
04-06-2003, 12:15 PM
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I´ve used AC R45S in my 1970 Judge with RA III.No problems.
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