Posted By: R_Blaha
Plugs for a 496 with stage 6 alum heads, also tuning MSD - 07/09/22 12:20 AM
Question, I'm going to change the plugs on my dad's car and I was just wondering what plug is everyone using with the stage 6 aluminum heads? The motor is a stroked 440 from muscle motors that is 496ci, 10.5 to 1 comp, with a 850 double pumper demon carb, and backed by a 727. I think he has Champions in there now, not sure if they are the RN12YC's or not.