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Cobra Forums
2013-14 Shelby GT500
Spark plugs
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<blockquote data-quote="masonh" data-source="post: 13265423" data-attributes="member: 151083"><p>I should add that the Denso IT22 are 2 steps colder and the IT24 is 3 steps colder than the OEM 2013 plugs. I guess the older model Shelby's ran colder plugs so when they say two steps colder for a 2011 Shelby, it's like three steps for us. I also think the Autolites AR94 are three steps colder as well, maybe four. </p><p></p><p>The autolites above is a racing copper plug and I hear good hings about it. Naturally it's better to be too cold than too hot in your plug selection. If you run plugs that are too cold you will eventually end up fouling them out and having to spend $20 on a another set. Run plugs that are too hot for your motor and you may end up buying a new motor at $30,000.</p><p></p><p></p><p>Not all of these plugs will match up perfectly with each other step for step.</p></blockquote><p></p>
[QUOTE="masonh, post: 13265423, member: 151083"] I should add that the Denso IT22 are 2 steps colder and the IT24 is 3 steps colder than the OEM 2013 plugs. I guess the older model Shelby's ran colder plugs so when they say two steps colder for a 2011 Shelby, it's like three steps for us. I also think the Autolites AR94 are three steps colder as well, maybe four. The autolites above is a racing copper plug and I hear good hings about it. Naturally it's better to be too cold than too hot in your plug selection. If you run plugs that are too cold you will eventually end up fouling them out and having to spend $20 on a another set. Run plugs that are too hot for your motor and you may end up buying a new motor at $30,000. Not all of these plugs will match up perfectly with each other step for step. [/QUOTE]
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2013-14 Shelby GT500
Spark plugs
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