What spark plugs

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Apr 19, 2007 | 08:28 AM

#11

Torque_Wrench

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From: In the Sticks of Virginia

I prefer the 41-985 Iridum Plugs from AC Delco

Apr 19, 2007 | 05:08 PM

#12

99Silver6.0

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From: Olathe, Kansas

Quote:

Originally Posted by alanderson1978

Are these good for any NA application? What are they gapped to?

They are NA suited. TR6 is best for juice or boost.

Apr 19, 2007 | 10:56 PM

#13

GarnerZ

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tr55 way to go 55-60 gap no power adders

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