Ok...I kinda feel like a tard. But, what kind of plugs should I put in my truck? I have an 07 silverado LTZ with an aluminum 6.0l. The ones that come in there are 7 bux a piece!!! I run NGKs in my 9 second car that are only 2 bux a piece LOL. Is there a different plug I can run that won't break the bank?

 

ngk tr55

 

Cool. What's with the expensive plugs they come out with?

 

i think they are platinum bosch plugs. they are good and last forever, but like you discovered they are expensive. the tr55s are copper so they dont last as long, but work just as well