LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Whats the best daily driver spark plug?

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Old 08-16-2005, 08:11 AM
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Whats the best daily driver spark plug?

Whats a good Spark plug for the LT1 with 135k miles on it. car is a daily driver, and does see some racing once in while..
i used GM's Platium plugs with the 4 prongs, but i think they are fouled out now, and need to change them
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Old 08-16-2005, 08:17 AM
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Re: Whats the best daily driver spark plug?

Well the Delco plats. are a very good plug for daily driving. I have just switched over to NGK TR-55s however and am happy with those as well.
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Old 08-16-2005, 08:18 AM
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Re: Whats the best daily driver spark plug?

Another vote for the NGK TR-55s.

No problems so far.
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Old 08-16-2005, 09:16 AM
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Re: Whats the best daily driver spark plug?

What about NGK TR6 ? Colder than stock,works well in nitrous ,but is it for daily driver?
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Old 08-16-2005, 09:24 AM
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Re: Whats the best daily driver spark plug?

Rule of thumb = 1 step colder for every 75hp increase.

Try a step colder and see how they look after a week or so of driving. If they carbon up then you need to go hotter. The correct heat range will self clean.

-Mindgame
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Old 08-16-2005, 09:47 AM
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Re: Whats the best daily driver spark plug?

Originally Posted by Mindgame
Rule of thumb = 1 step colder for every 75hp increase.

Try a step colder and see how they look after a week or so of driving. If they carbon up then you need to go hotter. The correct heat range will self clean.

-Mindgame
every 75hp increase? You talking about added nitrous hp?? For example for 150hp nitrous 2 step colder??
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