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Best Spark Plug for 5.3 with Supercharger?

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Old Apr 13, 2016 | 05:39 AM
  #21  
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Originally Posted by madmann26
Most people will tell you to not use a projected tip plug, ie, iridiums.

I use a TR6 gapped at around .027. They work great and are cheap and plentiful.
A TR6 Is a projected tip also, it's the plug design not the tip material that determine projected or non projected. A TR6 equivalent that is non projected is a BR6EF.
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Old Apr 13, 2016 | 03:01 PM
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TR6's gapped at .032
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Old Apr 13, 2016 | 06:49 PM
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Originally Posted by 03sierraslt
A TR6 Is a projected tip also, it's the plug design not the tip material that determine projected or non projected. A TR6 equivalent that is non projected is a BR6EF.
I have a set of those I am about to swap. What would you get them at for a mp112 on a LS6 making 6 or 7 PSI?
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Old Apr 13, 2016 | 08:13 PM
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For that boost I would run them at .032 which should be what they are gapped at out of the box. Naturally I would check them.
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Old Apr 13, 2016 | 10:22 PM
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Originally Posted by 03sierraslt
For that boost I would run them at .032 which should be what they are gapped at out of the box. Naturally I would check them.
Thanks, yeah I'll def check them.
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Old Apr 13, 2016 | 11:48 PM
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Originally Posted by 1bad2k
Thanks, yeah I'll def check them.
Ditch the tr6s and run ngk r5671a-8
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Old Apr 14, 2016 | 04:40 AM
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Originally Posted by 0235SS93
Ditch the tr6s and run ngk r5671a-8
Yeah I'm about to pull the TR6's and put in the BR6EF. I'll check those out that you mentioned.
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Old Apr 14, 2016 | 05:49 AM
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Originally Posted by 0235SS93
Ditch the tr6s and run ngk r5671a-8

Why run a non resistor plug in a LS? Many have had issues with this. Also a 8 heat range is too cold for his boost level.
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Old Apr 14, 2016 | 10:44 AM
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Originally Posted by 03sierraslt
Why run a non resistor plug in a LS? Many have had issues with this. Also a 8 heat range is too cold for his boost level.
People always say that but i have never seen a post/thread/anything. Not doubting you but seems like 1 guy 10 years ago had an issue and that idea just kinda took hold.
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Old Apr 14, 2016 | 10:50 AM
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Originally Posted by BlackGMC
People always say that but i have never seen a post/thread/anything. Not doubting you but seems like 1 guy 10 years ago had an issue and that idea just kinda took hold.
Even say that's a non issue, a 8 heat range is way too cold for that.
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