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Which spark plug?

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Old Oct 11, 2021 | 09:40 PM
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Default Which spark plug?

Hi all, I have a 2002 Z06 383 stroker track car that has mahle pistons, OEM ignition, crane cam, ported heads and headers on pump gas 93. I have no idea what compression ratio or size of cam unfortunately. Currently it has NGK TR5IX Iridium spark plugs, my question is is this a good plug? It runs at full throttle and no street use, but I have read a colder plug might be in order? I also heard silver tipped plugs might be a good choice? THX Brian
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Old Oct 12, 2021 | 08:52 PM
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Originally Posted by Rockitansky775
Hi all, I have a 2002 Z06 383 stroker track car that has mahle pistons, OEM ignition, crane cam, ported heads and headers on pump gas 93. I have no idea what compression ratio or size of cam unfortunately. Currently it has NGK TR5IX Iridium spark plugs, my question is is this a good plug? It runs at full throttle and no street use, but I have read a colder plug might be in order? I also heard silver tipped plugs might be a good choice? THX Brian
What problem are you trying to fix?
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Old Oct 13, 2021 | 09:55 AM
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i have 442 stroker (12.5 compression) and i run TR6 gapped @ 0.39
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Old Oct 13, 2021 | 11:00 AM
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I use a tr6 gapped at .30


Its work but I found my cam spec through a QR code and a number when I did a rear main seal that let me know it’s a stock ls1 cam spec after looking it up.. I’m sure there may be other way to figure out what it’s got maybe a tuner could give you some sorta range as well based off the tune possibly

Last edited by Speedy007; Oct 13, 2021 at 11:09 AM.
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Old Oct 13, 2021 | 02:51 PM
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I've run several plugs (OEMs, TR6s, AR-103s, etc.)...curious about other experiences and why they use what they use.

Last edited by Pb82 Ronin; Oct 13, 2021 at 02:52 PM.
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