I bought NGK V-power plugs for my GTA because that is what I run in my RS, but I've been reconsidering going back with stock AC Delco plugs instead, what do you guys think?

 

NGK makes a great plug. I use to run them in my jetskis and dirtbikes all the time. They have great heat range selections and they are very durable. I'm running ACCEL in my Trans Am and AC Delco in my Suburban with no complaints on either. My son is running Bosch Platinums in his 160hp Prelude SI.

 

Well I have dirt bikes and a a Jet Ski, I use NGK, but I am curious whether the Delco's would be best for a stock L98, or if NGK would actually be a step up. You know those old men who say if it ain't factory delco, it is sh*t. I sell parts part time, and have had to hear that at least twice a week for a year. But, I do know that Delco are great plugs as well as NGK, but I'm trying to get as much as I can out of this car so are NGK a Trans Am, and Delco a Firebird V6, or is it the other way around. Best Analogy I could come up with.