graysilv

hey guys i am about to change my spark plugs and i was wondering which one of these three would work better. any comments or suggestions are welcomed.

denso iridium
http://www.densoproducts.com/more_info.asp?pid=9781

ac delco iridium
http://www.acdelco.com/parts/sparkplugs/iridium.htm

ngk iridium IX
http://www.ngksparkplugs.com/produc...1420&country=US

00454sscamaro

personally i dont think they would be much different all being irridium if there the same heat range etc. i think you would see more a difference going from a different type of material or desing then brand.. soposedly iridiums biggest advantage-they stay clean longer.

orangeapeel

iTrader: (18)

Personally I think that you should tell us a bit more about your truck. I would suggest the NGK T-line of plugs. Maybe a TR-5 or 55 or 6. Depending on what you are doing.

graysilv

i dont have any major stuff on my truck, i have mainly full bolt ons and a small cam.

NHRAMAN

iTrader: (1)

GM puts those on so they have less warranty work----makes me think of only one plug....

TheBlurLS1

iTrader: (8)

NGK TR-55's gapped at .055. They are about $17 a set while the Iridiums are about $60 a set. I switched from regular 55's to iridiums and noticed no difference in anything.