Spark Plugs - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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 01-25-2006, 08:39 PM   #11
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My '97 SE came stock with the AC Delco Platinum (Iridium). Just replaced them at 106K and they look like they could go another 100 easy...
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Old 01-25-2006, 08:39 PM   #12
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I'll try the TR 55'* next time I change them cause first hand knowledge from those who used them is always a good bet.
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Old 01-25-2006, 08:49 PM   #13
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Don had 'em. Went to the AC Delco stockers (not sure which) and lost 1-2 mpg. Switched back to TR55'* and it came back.

I've consistently had great performance from them in a host of vehicles in the last 8 or so years.
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Old 01-25-2006, 09:45 PM   #14
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Little side note...

If they look confused, but they know they carry NGK'* but tell you they can't find TR55'*... Tell them the stock number is 3951 That will be the TR55

Also if Advance is close to you they should carry them..

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Old 01-25-2006, 10:48 PM   #15
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Quote:
Originally Posted by jr's3800
Little side note...

If they look confused, but they know they carry NGK'* but tell you they can't find TR55'*... Tell them the stock number is 3951 That will be the TR55

Also if Advance is close to you they should carry them..
Advance (at least in PA store region) will tell you they don't have the TR55s, but they have a comparable.Tell them to get them. They will have NGK TR55 all over the box.
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Old 01-26-2006, 09:15 PM   #16
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I just baught some autolite 104'* and have intake high flow cat 2.2'' SC pulley oversized idler and drilled 180 what do you guys think i should gap the 104'* too?
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Old 01-27-2006, 07:09 AM   #17
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Quote:
Originally Posted by 1993SSEi
I just baught some autolite 104'* and have intake high flow cat 2.2'' SC pulley oversized idler and drilled 180 what do you guys think i should gap the 104'* too?
Gap at ..055
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Old 01-28-2006, 12:09 PM   #18
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Here are two of my old spark plugs, they look like the factory ones, man they were bad.




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Old 01-28-2006, 01:11 PM   #19
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They definitely needed to be replaced
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Old 01-28-2006, 02:35 PM   #20
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Those gaps look to have worn to about .090". Similar to my SSEi when I bought it with 65k on the ticker.
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