Best Spark Plug?

[Joe’sMoparMess]

I have a 66 or 67 440 that I am freshening up for my 66 Charger. Stock heads and cam. What spark plugs do you recommend? I know this question is like asking blonde or brunette but I still want to know everyone’s opinion.

 

[F4R/T]

American made Champion.. the newer ones are made all over I believe..just my .002!

 

[WileE]

champion J-11Y , you can still get them

 

[Darter6]

J-11Y NOS are on Ebay if you want or The J-12YC took it's place.
Many prefer NGK or Autolite over Champion anymore. I still use Champion in my old Mopars.

 

[RemCharger]

Ngk xr5

 

[Dennis H]

NGK.

 

[4mulas]

Long reaching ngk for aluminum heads

 

[twecomm]

Been running with E3's in my 383 for a few years now with good results.

 

[ODZKing]

I had a similar post several years back and a few folks recommended NGKs. I bought some and found the fouled quicker than the Champions I had used for years. I went back to Champions.

 

[WileE]

Long reaching ngk for aluminum heads

Per op, stock heads and cam.

 

[4mulas]

Per op, stock heads and cam.

Okay. Ngk short reach for him. That’s why I said I had an aluminum head.

 

[Cranky]

Heat range can vary for your combination. If you have fouling problems from oil, you can step up 1 range to see if that helps. You also will need to find out why they are fouling in the first place. Used to run Bosch in my 1 ton because it had lots of miles and used some oil and the Bosch didn't foul out like many of the others. I also stepped up to a hotter plug in the cylinders that were fouling the others.

 

[WileE]

As an aside, years ago when I worked in a garage & then had my own business, doing tune-ups, always used champion plugs. And never, never, ever had an issue/problem/comeback due to a faulty spark plug. I've used ac-delco and autolites in family cars, champions in my mopars, through the years, and never had an issue with any of those as well.