Autolite 104 vs NGK TR-55

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05-20-2003, 05:05 PM

ls1290

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Autolite 104 vs NGK TR-55

Any really difference between the two plugs gapped to .55?

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05-21-2003, 01:16 PM

ls1290

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Re: Autolite 104 vs NGK TR-55

ttt

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05-21-2003, 01:40 PM

Scalpel

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Re: Autolite 104 vs NGK TR-55

The Autolite 104s are a step colder than the TR55s. TR55s are stock heat range. The Autolite 104s would be more comparable to the NGK TR6s.

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05-21-2003, 01:58 PM

Scalpel

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Re: Autolite 104 vs NGK TR-55

Check out this site for spark plug info on our cars:
http://www.ls1info.com/article.php?sid=45

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