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Ngk TR55 or TR5

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Old Apr 3, 2002 | 12:31 AM
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Huttos98Vette's Avatar
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Default Ngk TR55 or TR5

Just wondering what is the difference between the two and which one should I install ?
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Old Apr 3, 2002 | 01:16 PM
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Default Re: Ngk TR55 or TR5 (Huttos98Vette)

The TR55s are what you will want. They are in the correct heat range for a naturally aspirated LS1 and you will be very happy with them :cheers:

Jerry
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Old Apr 3, 2002 | 04:41 PM
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Default Re: Ngk TR55 or TR5 (Huttos98Vette)

Just wondering what is the difference between the two and which one should I install ?
yes, go with the TR55's. btw, i just got a set two days ago. :)

the TR5's are gapped to .035 i think, and the TR55's gapped to .050.
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Old Apr 3, 2002 | 05:28 PM
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Default Re: Ngk TR55 or TR5 (tattooed)

The TR-55 is preset at the factory for a gap around .060", which is spec. for the C5 ignition system. Increasing the gap of a TR-5 can be done, put the ground post would not be parallel to the tip. Use the TR-55. :cheers:
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Old Apr 3, 2002 | 05:30 PM
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Default Re: Ngk TR55 or TR5 (2kbluestreak)

Call LS1 Motorsports and talk to Ron. He is the spark plug king.
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Old Apr 3, 2002 | 06:55 PM
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Default Re: Ngk TR55 or TR5 (2kbluestreak)

The TR-55 is preset at the factory for a gap around .060", which is spec. for the C5 ignition system. Increasing the gap of a TR-5 can be done, put the ground post would not be parallel to the tip. Use the TR-55. :cheers:
hrm ... i thought TR55's were gapped at .050. we'll find out as soon as mine get here.
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Old Apr 3, 2002 | 07:49 PM
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Default Re: Ngk TR55 or TR5 (tattooed)

hrm ... i thought TR55's were gapped at .050. we'll find out as soon as mine get here.
All of mine were gapped at .057 :yesnod:

Jerry
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Old Apr 3, 2002 | 09:08 PM
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Default Re: Ngk TR55 or TR5 (99 Corvette)

from the owner's manual:
http://www.mygmlink.com/pdf/go2conte...99corvette.pdf

Spark Plug 41-931 (0.60 inch Gap)
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