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best spark plugs for header swap?

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Old 11-26-2011, 07:31 PM
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Default best spark plugs for header swap?
I am removing my manifolds for longtubes. What are the best bang for your buck spark plugs? Thanks Justin
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Old 11-26-2011, 07:46 PM
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That question cannot be answered because it makes no sense.
All things considered equal, you will most likely have to go to a cooler plug because you will run leaner with the long tubes on it now.
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Old 11-26-2011, 07:48 PM
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What is the most common plug to go to with header swap.
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Old 11-26-2011, 07:55 PM
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Old 11-26-2011, 08:02 PM
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NGK TR55's
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Old 11-26-2011, 08:18 PM
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^what size gap? and i did do a serch and there are so many different opinoins about what the gap size should be but most people say ngk tr555's
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Old 11-26-2011, 10:32 PM
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I run tr5's @ .040
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Old 11-26-2011, 10:32 PM
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ours cars initially came with a recommended .060 gap.......but that has changed to .045.......i still prefer .060
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Old 11-26-2011, 10:36 PM
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So tr5's and tr55's are both good which is best?
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Old 11-26-2011, 10:56 PM
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Same plug. Tr5 comes pre gapped @ .035....tr55 @ .055
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Old 11-26-2011, 11:00 PM
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Which gap is best for exhaust and cam?
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