i pulled a plug just to take a look and this is what i see. this does not look normal to me. good grief

 

Looks normal to me other than the residue on the plug, have they been in long? Just looks like they have a lot of miles on them. Mine are probably worse, they are still factory with 114k

 

88k miles and dont look normal at all to me.

 

Looks fine to me...

http://www.verrill.com/moto/sellingg...colorchart.htm

 

looks fine other then the 2 inch gap !!!!!! lol

 

is it an iridium plug? Iridium plugs are shaped different. Did I spell that right?? What do you see that doesn't look right to you?

Looks like a clean burn.

 

Little carbon build up and a little lean.

 

Put in some NGK tr55's

 

I used the tr5ix's and it was a noticeable difference. Took me about 3 hours (mostly the rears) to do. Defiantly worth the money. My car has 92k on it and when I pulled them they sorta looked like that (not nearly as bad).

 

NGK's website shows these plugs for the GXP

2008 PONTIAC GRAND PRIX GXP 5.3 V8 C FI

Spark Plug Part No. Stock No. Plug Gap Photo
V-Power TR5 2238 .040
G-Power TR5GP 3186 .040
Laser Platinum PTR5D-10 * 3784 .040
OE Laser Iridium IZTR5B11 ^ 1465 .040
Iridium IX TR5IX 7397 .040
* “Laser Series” Platinum center electrode, and Platinum pad ground electrode

I don't see TR55 listed at all.

 

get the iridiums... TR5IX for stock heat range... or if you're gonna get a tune at all, go with the TR6IX ones.. they're one heat range cooler...

 

$6.25 each is the cheapest I've found on the TR5IX...........do you have a cheaper source?

 

Iridiums last from 75K - 100K miles, that's why they are so expensive. Copper plugs last about 15-25K (some more some much less) which is why they are dirt cheap.

 

3 hours.... LMAO

 

got mine from amazon.com.. the TR6IX... $60 for all 8....

normally are $8 - $9 each at other places I've checked...

 

NGK TR6IX, $6.66 each on Rockauto.com. My favorite place to buy parts

 

Why LMAO? Those back plugs were a bitch to change. Little room and you have to have the right socket wrench and extension (which I did not have) to get back there. I scraped my knuckles pretty bad on the back exhaust manifold.

 

yeah, when I go to do mine, I may try removing the dog bone and rocking the engine forward a little so I have some fricken room... heh...

 

Plugs arent that hard. Not trying to be a hero or anything but i can have them out and back in in less then an hr

 

so when ya comin' over??