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what spark plugs are u guys running?

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Old 02-04-2010, 10:15 AM
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Talking what spark plugs are u guys running?
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Old 02-04-2010, 10:39 AM
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i have ac delco iridium right now but i just added a little surprise behind my seat so i will be running ngks
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Old 02-04-2010, 11:14 AM
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n/a--TR55ix

FI--TR6ix
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Old 02-04-2010, 11:20 AM
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Ngk tr55

Originally Posted by 8.1 HD
n/a--TR55ix

FI--TR6ix
You're wasting your money on getting the iridiums when you're running boost, plus those tips like to break off pretty easy. I'd use the coppers if I were you.
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Old 02-04-2010, 11:32 AM
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i use tr5s....... when get the spray installed i will run tr6s
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Old 02-04-2010, 03:33 PM
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ngk tr55 here also
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Old 02-04-2010, 03:44 PM
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NGK TR6 plugs here.
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Old 02-04-2010, 05:26 PM
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If you want an inexpensive plug that works well in our trucks, you can't beat the copper NGK TR55's gapped between .050 and 060. If you're looking for longevity out of your spark plugs go with either the Delco iridiums or the NGK TR55ix. The gap for the Delco is .040, not sure of the NGK, but it may be the same exact plug with different packaging, as I've seen Delco plugs that are marked NGK. This is for NA applications...NGK TR6's are the favorite for boosted applications.
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Old 02-04-2010, 06:21 PM
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im running the delco iridiums also.
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Old 02-04-2010, 06:23 PM
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no plugs...runs on hamsters
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