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Old Mar 22, 2014 | 02:54 AM
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Default plug recommendation
I forget the exact plug I'm running (some expensive iridium plug) but I want to make sure I'm running the right plugs, here's what I've got:

'98 A4
Dart Pro 1 (64cc) 11:1
228/232 .571/.573 112
Fast/LS2 TB
Shorty Headers
160*
6.5-7 psi P1SC A&A
(Yank SS3600/ 3.42 if that matters)

I don't mind spending the $, what's the best plug you can recommend for this setup?

Thanks!
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Old Mar 22, 2014 | 09:02 AM
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http://forums.corvetteforum.com/c5-f...218-plugs.html
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Old Mar 22, 2014 | 01:43 PM
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Will the AC Delco Iridium OEM Corvette ZR1 Spark Plugs work with the LS1 (w/ Dart heads)? If GM trusts them on a 640hp boosted car for 100k mile warranty they must be pretty good. Right?
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Old Mar 22, 2014 | 07:23 PM
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Originally Posted by reactor2
Will the AC Delco Iridium OEM Corvette ZR1 Spark Plugs work with the LS1 (w/ Dart heads)? If GM trusts them on a 640hp boosted car for 100k mile warranty they must be pretty good. Right?
Too hot for boost you need a NGK TR6
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Old Mar 23, 2014 | 04:11 PM
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Originally Posted by a/c man
Too hot for boost you need a NGK TR6
The ZR1 is boosted, so I figured this would be a good choice for the LS1.

Is there an iridium equivalent to the TR6?
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Old Mar 23, 2014 | 04:55 PM
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Default plugs
Originally Posted by reactor2
The ZR1 is boosted, so I figured this would be a good choice for the LS1.

Is there an iridium equivalent to the TR6?
Why spent the additional dollars TR6 are awsome, even silly HP boosted cars
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Old Mar 23, 2014 | 05:31 PM
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So is anyone running the ZR1 plugs in their boosted application?
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Old Mar 23, 2014 | 05:48 PM
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Originally Posted by reactor2
So is anyone running the ZR1 plugs in their boosted application?
no
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Old Mar 23, 2014 | 06:26 PM
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NGK BR7EF gaped at .028 they are a non protruding tip!

This is what I run on my set-up!

Thanks,Matt
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Old Mar 23, 2014 | 06:34 PM
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Seriously, nobody is running the ZR1 plugs on their LS1? Anybody running iridium anything on their boosted motor?
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Old Mar 23, 2014 | 07:19 PM
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Yes I ran TR7IX on mine for a high boost C16 tuneup, to reach 1000rwhp. Recommended by my tuner.
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