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#2
10-19-2005, 12:53 AM
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I'm finding that the AC Delco Double Platinum is the best? But i'm also seeing a lot about Iridium? All the propaganda for it sounds good, but is the performance as good as the hype?
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#4
10-19-2005, 10:35 AM
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Re: Best Spark Plugs?
Quote:
 Thrasher CAI, DHP v1.0 PCM, SLP Headers, 3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT, u-bend delete, 160 TS, ZZP Stage 1 72mm TB, TB spacer, MSD 8.5mm wires, Autolite 103, Goodyear Gatorback Serp. & SC Belt, Nitto NT555R Drag Radials 1/4 ET: 13.210 sec. @ 104.490 mph 0 - 60 ft: 1.945 sec.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#5
10-19-2005, 11:48 AM
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Re: Re: Best Spark Plugs?
No data, just two mech shops in town telling me thats the best ones to use for my car. But from what I'm gathering now the AC Delco Iridiums (or some kind of iridiums) are the best. Does that sound right? What do you run?
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#6
10-19-2005, 12:04 PM
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Re: Re: Re: Best Spark Plugs?
If you're stock go with the 41-101 Iridiums as everyone has suggested. They are the standard OEM plugs now. I use them in my Regal GS and son's Alero GL2. In my GTP I use Autolites but I'm modded. BTW - When the AC Delco 41-101 Iridiums were first introduced a few years back they were actually made by NGK. The 41-101 in my Regal GS has NGK stamped in the base below the ceramic.
Thrasher CAI, DHP v1.0 PCM, SLP Headers, 3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT, u-bend delete, 160 TS, ZZP Stage 1 72mm TB, TB spacer, MSD 8.5mm wires, Autolite 103, Goodyear Gatorback Serp. & SC Belt, Nitto NT555R Drag Radials 1/4 ET: 13.210 sec. @ 104.490 mph 0 - 60 ft: 1.945 sec.
__________________
'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#7
10-19-2005, 01:21 PM
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Re: Best Spark Plugs?
yeah, i noticed that too -> NGK stamp on the base... I had wondered about that
__________________
1998 Pontiac Grand Prix GTP 3800 Series II V6 3.5" Supercharger pulley
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