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Old Sep 22, 2018 | 02:46 AM
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Default sparks plugs

2003 gmc pick up 6.0 2500 hd. searching for the best spark plugs
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Old Sep 22, 2018 | 07:58 AM
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Not something you would run on a NOS application but I have NGK TR6IX plugs in my 03. Not saying it's the best plugs to use but they're working much better than the Bosch Platinum 4's previously installed.
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Old Sep 24, 2018 | 03:49 AM
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Originally Posted by 01CamaroSSTx
Not something you would run on a NOS application but I have NGK TR6IX plugs in my 03. Not saying it's the best plugs to use but they're working much better than the Bosch Platinum 4's previously installed.
ok thanks
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Old Sep 24, 2018 | 10:26 AM
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Iridium plugs. You get close to the conductivity of copper plugs without the rapid wear. The only downside is they're the most expensive plugs but when you figure $8 a plug vs $5 for something you'll do once every few to several years, the price difference is a nonstarter.

Mine's a '96 C1500 and I've got the ACDelco 41-993 iridium plugs. Work great.
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Old Sep 26, 2018 | 07:50 AM
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Some standard NGK tr55 plugs will work fine.
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