what spark plugs to use

RustyRatRod said
That's just hogwash. There are only three or four factories in the WORLD that make plugs. From there, they are rebranded and sent to vendors world wide. That means there's a GOOD possibility that whoever makes the NGK plugs you like, also make the Champions you don't. A plug is a plug is a plug. Brand has ZERO to do with it as long as you get the correct fit and heat range for your application. You've learned it WRONG from somebody that learned it WRONG and then taught you WRONG and now you're on here tellin other people WRONG. You're WRONG.

Sorry Rusty, Champion plugs Never ran good in my vehicles. I didn't learn it WRONG from anybody I have learned from experience with my vehicles, I have had a Mopar for over 50 years starting with a 69 340 Dart and to this day will not run Champion plugs never had good luck with them. The OP was asking what's a good street plug, all I stated was what I didn't have good luck with and what runs really good in my application. Yes there are probably only 4 factories that make plugs but each plug is made specifically for that brands specifications as the NGK plug is not the same as a Champion just look at the electrode or look at a E3 plug so all plugs are really not the same. I'm not on here tellin other people WRONG just stating what works for me and what doesn't.