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Old Jun 28, 2002 | 04:21 PM
  #1  
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Default Spark plugs

Hey guys, what's the best spark plug for a 99 C5. Thank you.
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Old Jun 28, 2002 | 04:52 PM
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Default Re: Spark plugs (NXVette)

NGK TR-55 or colder TR-6's...depends on number and type of mods.
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Old Jun 29, 2002 | 10:45 AM
  #3  
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Default Re: Spark plugs (C5Cemo)

A/C RapidFire #12... :chevy :seeya
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Old Jun 29, 2002 | 11:22 AM
  #4  
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Default Re: Spark plugs (C5Cemo)

NGK TR-55 or colder TR-6's...depends on number and type of mods.
:yesnod: :yesnod: :yesnod:

vetterdstr :cheers:
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Old Jul 2, 2002 | 03:57 PM
  #5  
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Default Re: Spark plugs (NXVette)

I have the TR-6 gapped at .35 :crazy: :crazy: :crazy: But that's because of the 150-shot on top. :D
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Old Jul 2, 2002 | 06:04 PM
  #6  
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Default Re: Spark plugs (Tuan Le)

Use the NGK 55's, they come pre gapped at .057 which is fine for non-nitrous motor. You can find them at O'Riellys Auto for $1.65 ea.
Pulled factory AC plugs at 38,000 miles all pucks were missing gaps at .065 or higher, not good, bad idle. NGK's work great and for the
money you can change them out yearly for less than $20! :cuss
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Old Jul 2, 2002 | 06:31 PM
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Default Re: Spark plugs (NXVette)

If longevity is of a lesser concern, and performance and good heat dissapation is the highest concern, than TR55 copper plugs. TR6's for nitrous or sustained RPM (road racing) type of situations.
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Old Jul 2, 2002 | 08:17 PM
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Default Re: Spark plugs (C5Cemo)

Thank you guys....
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Old Jul 2, 2002 | 08:20 PM
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Default Re: Spark plugs (NXVette)

I've been happy with the TR-55's.

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