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the best plugs

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Old 07-06-2003, 11:05 AM
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Default the best plugs

what are the best plugs for the ls1's. tr6-denso iridiums or ngktr55.
Old 07-06-2003, 02:16 PM
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Default Re: the best plugs

I think the Denso's are the best but they are very expensive. The TR55's will do fine for the dailiy driver.
Old 07-06-2003, 02:46 PM
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Default Re: the best plugs

I don't care for Denso. That is what came stock in my car. I like the NGK TR55s.
Old 07-06-2003, 03:15 PM
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Default Re: the best plugs

Denso iridium and ngk iridium are basically the same plug. We use denso iridiums in our race car. We have 1400hp and it does the 1/4 mile in 6.94. Therefore I believe Denso are the best too.
Old 07-06-2003, 07:35 PM
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Default Re: the best plugs

thank you i believe it is 7 to 2 on the denso's. also westers said to go a step colder.




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