LT1-LT4 Modifications 1993-97 Gen II Small Block V8

What type of spark plugs do you use?

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Old 11-23-2006, 10:27 PM
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im running stock AC Delco plugs, ive heard that all others have misfiring issues so i stuck with the stockers and they have been awesome for me
Old 11-24-2006, 12:22 AM
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Originally Posted by ks my ss
i have run ac delco r44lts plugs for years.

Same here
Old 11-24-2006, 08:58 PM
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I ran some Autolite 103's at .035 for the times in my sig. They might be a bit cool for my combo but they sure did run good fresh.
Old 11-24-2006, 09:05 PM
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I just use stock OEM ACDELCOs
Old 11-24-2006, 11:30 PM
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I run delco's now. But I ran autolite 106 for awhile. I run the delco's that are for a ls1 car because of the overall lenth. They helped with clearence for my headers. Is the TR55 the same overall lenth as the autolite 106's?
Old 11-26-2006, 01:15 PM
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i just put in a set of autolite 106s but usually run regular ac delco.the ones i just pulled out all looked awesome after probably 100k besides 1 that had a bad plug wire.
Old 11-26-2006, 02:23 PM
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NGK TR55's here!
Old 11-26-2006, 03:30 PM
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I use TR55's. I think that plug has the unanimous vote.
Old 11-26-2006, 03:44 PM
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TR55 Iridiums Here =]



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