Plugs

[MassDart]

Whats everyone like for plugs in a carbed Magnum? Same RN12Y I use in my 273?

 

[66Valiant528]

I think Magnums take an RC12YC

 

[Professor Fate]

Autolite 3924.

 

[stroked340]

Autolite 3924's Champions=garbage!!

 

[Scody21]

I’m running NGK BKR6E / 6962 in my 02 Ram 2500 with the Mag and in my 340 duster with J heads…

 

[Johnny Mac]

Bkr5e ngk gets my vote.

 

[66fyssh]

I moved to a RC9YC on my aluminum head 5.9. 12's were too hot, 9's are perfect. No fouling issues at all.