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Tr7 spark plug NA ls7

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Old Mar 21, 2022 | 05:35 PM
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Default Tr7 spark plug NA ls7

Here are my Ngk Tr6 copper spark plugs, well one bank of them for viewing. I have 3 to 4 discolored threads from the top and I hear the heat range rule of thumb is 2 to 3 max.

Would going to a tr7 plug be of any benefit for a 630 rwhp ls7? Anyone have meaningful results going from tr6 to tr7?
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Old Mar 21, 2022 | 07:48 PM
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Are you using some type of octane booster?
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Old Mar 21, 2022 | 08:31 PM
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Originally Posted by old motorhead
Are you using some type of octane booster?
Yessir, please disregard the orange tinge 🍊
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Old Mar 21, 2022 | 11:11 PM
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I ran a TR7IX on my last setup with 664whp and aggressive drag strip use. Yours might be fine with a tr6 but a tr7 won't hurt anything.
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