Proper gap for plugs
This is a discussion on Proper gap for plugs within the 3.8L V6 Supercharged (L67)(L32) forums, part of the Engine category; I'm going to get some AL 104's and i'm just wondering what the proper gap for these are....
| 3.8L V6 Supercharged (L67)(L32) L67 (1997-2003 Model Years) L32 (2004 Model Year) |
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#2
01-02-2009, 03:09 PM
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 Re: Proper gap for plugs It really depends on what mods you have but you should be fine with a .055 gap.
__________________ 2000 Silvermist Grand Prix GTP Coupe Mods-Custom Thrasher CAI|Ceramic Coated S&S Headers|3.4" pulley|ZZP S4 Blower|Powrtuner|PRJ 10.4mm wires|HIDs|F-Body brakes|Koni's and Voglant's|        |
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Clar2478 (01-03-2009) | ||
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#4
01-02-2009, 08:43 PM
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| Re: Proper gap for plugs i've got a zzp pcm, thrasher intake, 3.6" pulley, 3" DP and 3" cat-back, and 180* therm
__________________ Call me Brad '06 GT: Just a few mods here and there. |
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#5
01-02-2009, 10:34 PM
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| Re: Proper gap for plugs Stock gap .065 I think. The bigger the gap without getting blow out the better.
__________________  Turbonetics 62-1 T4 (i think)-XP CAM-A2A IC-Ported Heads-Custom Turbo headers-60 lb inj-F-Body UIM and LIM-AEM WB, TEP trans w 1" chain and Circle D TC, Bilstien Struts WHY IS EVERYONE SO OPPOSED TO DOING A COMPRESSION TEST TO TROUBLESHOOT PROBLEMS? |
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#6
01-05-2009, 01:42 AM
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| Re: Proper gap for plugs I used to run AL104s @ .054 gap when my car was more mild years ago. I now run AL103R at .050 with a bunch more work. On my Black GTP I run AL104s @ .054 , works well....
__________________ Shawn W. Larsen  '07 Chevy Trailblazer SS___'00 Pontiac Grand Prix GTP ___'99 Pontiac Grand Prix GTP  |
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#7
01-05-2009, 01:42 AM
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| Re: Proper gap for plugs BTW, stock gap is .060 IIRC
__________________ Shawn W. Larsen '07 Chevy Trailblazer SS___'00 Pontiac Grand Prix GTP ___'99 Pontiac Grand Prix GTP |
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#8
01-05-2009, 02:01 AM
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| Re: Proper gap for plugs Yes, all GM V6's in the Grand Prix...3.1, 3.8, and 3.8 S/C are all .060" Stock. I run .050" right now on my AL103's...
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#9
01-06-2009, 08:15 PM
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| Re: Proper gap for plugs hmm i dont know why i got the random cylinder missfire, i use auto lite 104's and i gapped them at .055
__________________ SLP headers, Wizaird cai, zzp1.0pcm ,slp powerflo catback, 3.4mps, NGK TR55's, 180*, zzp stage 1 hv tb,tb spacer, tb heatshield, Triple Edge Performance High performance Tranny, flipped motor mounts, spring blockers, prj 10.4mm wires, Sloted rotors & Ceramic brake pads,Alternator Voltage Booster. zzp 1.9 rockers & 105# springs |
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