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Thread: tune up
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03-04-2009, 06:07 PM #1
tune up
i wanna do a tune up to my gto it have almost 42k is it time to change the spark plugs ?
go with ac delco or NGK ?
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03-04-2009, 06:10 PM #2
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Phantom Black Metallic- 2004 GTO M6
IIRC, LSx motors come with iridium plugs and they are NGK from the factory.
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03-04-2009, 06:16 PM #3
tune up
do u think it time for a tune up ?
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03-04-2009, 06:19 PM #4
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Phantom Black Metallic- 2004 GTO M6
Not yet. If your GTO is still runnin well, then leave the tune up til 50k.
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03-04-2009, 06:28 PM #5
thanks
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03-04-2009, 06:33 PM #6
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Phantom Black Metallic- 2004 GTO M6
No prob.
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04-02-2009, 05:14 AM #7
The original spark plugs arent NGK. They are AC DELCO, which is GM's plug...... unless somebody swapped AC's into my car and the manual is wrong which states a 41-985 ac delco plugs goes into our engines.
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04-02-2009, 06:28 AM #8
Mine were iridium and were ac delco. That part number is a platinum tip. Don't doubt that that plug was the "standard" one though hsince it's good for 100,000 miles
The main thing is many cars left the factory with mis-matching gaps on plugs. Different cars had different plugs depending on when they went down the line. The factory seemed to change parts all the time down there. lol
From experience, I know that lots of early 04s dynoed 10-20 rwhp low because of this. ...the main thing to do if you still have factory plugs is to pull thenm and re-gap them.
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04-02-2009, 09:43 AM #9
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- Aug 2006
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- Baton Rouge, La.
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QuickSilverMetallic- 2005 GTO M6
I was shocked to see these cars dont have a servicable fuel filter. Says the filter must be changed with the pump? WTF??
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04-02-2009, 10:07 AM #10
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04-02-2009, 02:23 PM #11
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04-02-2009, 05:09 PM #12
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Phantom Black Metalic- 2005 GTO
mods: custom built twins, built 408 w/l92 stock GM heads,GM matching intake,drag bags,frame ties,aluminum drive shaft, performabuilt 4l80e,Yank converter,ohios fastest and quickest 04-06 GTO 9.52 at 144mph. 1.50 60ft on stock rear end and shafts/suspension,on drag radials.
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04-02-2009, 05:16 PM #13
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Phantom Black Metalic- 2005 GTO
I have to disagree mine had GM delco they were iridiums from GM,I change mine twice a year,regardless..best performance is my goal,gaps,plugs wires change em every year ,look at it this way the summer heat will kill those wires not to mention all the heat from the header/manifolds with under hood heat.,NGK plugs come with 2 year warrantee,MSD wires have a year.
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