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Author Topic: Which spark plug should I use?  (Read 745 times)

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james

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Which spark plug should I use?
« on: January 26, 2021, 05:17:01 PM »
Have a 427 FE with autolite plugs ap3924. Which one should I get? Autolite platnum.  Autolite copper core.  Autolite copper core resistor or autolite double platnum? Or is there another brand you would suggest? Thank You!
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Falcon67

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Re: Which spark plug should I use?
« Reply #1 on: January 27, 2021, 11:38:50 AM »
I run plain copper core in my older race engines.  The dragster heads use a NGK plug that has some other weird-tanium material but is the correct thread and heat range.  The 351Cs and such have all run Autolite copper core plugs for years.
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james

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Re: Which spark plug should I use?
« Reply #2 on: January 27, 2021, 06:25:30 PM »
Thank You for responding, I really appreciate it.
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