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08-15-2019, 07:42 AM | #1 |
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spark plugs 59ab
what is a good plug for a 59ab edelbrock heads, tube headers, dual holley carbs
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08-15-2019, 08:35 AM | #2 |
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Re: spark plugs 59ab
Motorcraft works for me don't know the number ask Napa
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08-15-2019, 08:59 AM | #3 |
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Re: spark plugs 59ab
Asking NAPA might not be a good thing to do, because they will probably give you the number of a stock replacement, that will probably be incorrect. Make sure you have the proper thread length. Many aftermarket heads take longer than stock plugs. Stock heads take 3/8" reach plugs (Champion H series), while most after market heads I have seen use 3/4" reach plugs ("L" series Champion plugs). Too short a plug will be "shrouded", while one that is too long will interfere with the exhaust valve, causing a collapsed side electrode at best and engine damage at worst.
Perhaps someone on here has a more precise answer, but the make of plug is a personal choice, the length can be determined by screwing one into a head that's off the engine, but the heat range is best determined by experience. Edmunds heads have the spark plugs relocated so they can use extended tip plugs, but I think they are the only ones that can. resistor plugs are usually unnecessary, and the other variables are again, personal choice. |
08-15-2019, 03:41 PM | #4 |
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Re: spark plugs 59ab
autolite 216 and forget the TMK
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08-15-2019, 05:02 PM | #5 |
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Re: spark plugs 59ab
Edelbrock recomends rc12yc or rc14yc champions or equvalent. 14mm, 3/4” reach,flat gasket,5/8 hex extended nose. I like NGK plugs,but others work fine.
John
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08-15-2019, 07:34 PM | #6 |
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Re: spark plugs 59ab
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08-16-2019, 09:26 AM | #7 |
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Re: spark plugs 59ab
This number is wrong. Only 3/8” reach, need 3/4” For Edelbrock modern heads per the Edelbrock instruction sheet.
Autolite 3924 or Ngk BCP5ES interchange amoung others. John
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Welcome each day Last edited by john in illinois; 08-16-2019 at 10:32 AM. |
08-16-2019, 09:38 AM | #8 |
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Re: spark plugs 59ab
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08-16-2019, 10:21 AM | #9 |
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Re: spark plugs 59ab
Do what you want, but I wouldn't use Champions. Quality is way down from their glory days.
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08-16-2019, 11:00 AM | #10 |
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Re: spark plugs 59ab
To be clear, I wasn't recommending Champions, I was just using them as an example, because they were used by Ford in those days. As I said, brand is a matter of personal choice. That being said, I have a set of Champion L82YC plugs in the Edmunds heads on my '51 Merc and they have performed admirably.
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08-16-2019, 03:22 PM | #11 |
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Re: spark plugs 59ab
Ngk b6l
gb
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