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what plugs and what gap?

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Old Feb 24, 2017 | 02:31 PM
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Question what plugs and what gap?

6.0 bored 40 over running 243's milled 10 thousandths. Running 61 cometic gaskets. Ls6 intake 36lb injectors . Long tubes, 3" ORY & cat back . Running ngk tr55's now gapped at 60 . Im thinking thats way to much gap for my setup and maybe even the wrong plug . Heard others mention their cars didnt like the tr55's either . Any suggestions?
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Old Feb 24, 2017 | 05:45 PM
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Forgot to mention. Flat top pistons without reliefs
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Old Feb 25, 2017 | 09:07 AM
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Get TR6's, gap them .040 for a strong spark, it's been working well without issue. The 6's are slightly cooler.
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Old Feb 25, 2017 | 09:13 AM
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If you're going to gap down to 35/40, you buy TR5s, not tr55s. They are the same plug other then where the gap should be. I run 5s at 40.
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