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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

TR55 or TR55GP?

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Old 05-13-2006, 09:29 AM
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Location: Indiana
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TR55 or TR55GP?
I dont know what to get the difference is only like 60 cents.

TR55 GP which has a platinum electrode:
http://store.summitracing.com/partde...5&autoview=sku

or Plain TR55 which has the nickle alloy electrode:
http://store.summitracing.com/partde...5&autoview=sku
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Old 05-13-2006, 09:57 AM
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Re: TR55 or TR55GP?
For a fairly stock car the platinum would be OK with the ONLY benifit being they should last longer, but for performance use most of us stick with a plain plug like the TR55.
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