Spark plugs
Thread Starter
Race Director
Joined: May 2003
Posts: 14,137
Likes: 2,984
From: Iowa
St. Jude Donor '03 thru '26
Spark plugs
I'm going to replace the spark plugs and wires on my newly acquired 1999 coupe. I plan on using the red Z06 wires (as I've read they are better than the stock C5) but I'm confused on which spark plugs to use. I want to stick with AC Delco but looking to order on RockAuto there is copper, platinum, double platinum, iridium, and ruthenium. They are priced according, $1.44, $2.85, $4.78, $22.79 
, and $13.94
So what is stock or what is everyone using?
, and $13.94 So what is stock or what is everyone using?
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
I'm going to replace the spark plugs and wires on my newly acquired 1999 coupe. I plan on using the red Z06 wires (as I've read they are better than the stock C5) but I'm confused on which spark plugs to use. I want to stick with AC Delco but looking to order on RockAuto there is copper, platinum, double platinum, iridium, and ruthenium. They are priced according, $1.44, $2.85, $4.78, $22.79 , and $13.94
So what is stock or what is everyone using?
, and $13.94 So what is stock or what is everyone using?
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Joined: Aug 2016
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From: Jennings LA
Think it would depend on what you're going to do with your car. Per example, I just cruise down the road less traveled, not into racing or high speeds anymore. Done most all my go fast days on motorcycles. The stock stuff lasted over 100K miles on my car so went with stock wires and iridium GM plugs. Just be sure you get new wires as I had a few come apart on me when changing them.
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