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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-03-2007, 07:02 PM   #1
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Default Spark Plug Question

I have seen numerous differences in spark gapping due to changes in mods and setups...

If I have an N/A 3800 in mine, only changes are an open intake and a 180 t-stat, would I still want to gap them at .060, or would I want to make a slight adjustment? Would it even matter, and what would I get out of it?
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Old 04-03-2007, 07:04 PM   #2
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Stock plugs, stock gap.
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Old 04-03-2007, 07:35 PM   #3
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What about the TR55s that I will be putting in? The descript on those said .059...
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Old 04-03-2007, 08:26 PM   #4
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isn't .060 stock gap? that'* really not far from .059, so that sounds right
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Old 04-05-2007, 02:54 AM   #5
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Stock gap is on the sticker over the radiator...its .60
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Old 04-05-2007, 03:13 AM   #6
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I figured .060 would be good. I thought maybe cause the ones I have in there were gapped at that and aren't doin too well, then I had a revelation... maybe the ones in there are CRAP! lol
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Old 04-05-2007, 03:15 AM   #7
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I know some people gap there NGK'* at .55....but because of my limited/building knowledge i don't know why they do that
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Old 04-05-2007, 03:44 AM   #8
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I believe it has something to do with forced induction and mods.
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Old 04-05-2007, 08:11 AM   #9
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Quote:
Originally Posted by mstrwolfgang
I believe it has something to do with forced induction and mods.
That is correct.
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Old 04-05-2007, 02:26 PM   #10
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Quote:
Originally Posted by mstrwolfgang
I believe it has something to do with forced induction and mods.
If you're one pulley size down on one-heat range cooler plugs.
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