I am currently using autolite 85's in my 440. Pretty mild build, race ported 906 heads
any suggestion for better plugs?? Looking for the good and bad sides

 

I have noticed that Champion plugs have always worked best in my mopars. I have heard about other brands skipping and misfiring for unknown reasons.

 

I use Champion.

 

Champions in a Mopar.
Can't give you a reason why, it's just the way it has always been.

 

I am glad and surprised to see this, as usually the expensive plugs are advised, NGK or Bosch. I also, have always used Champion as this is what Chrylser used and the racers of the day all ran champion in mopars. I usually go with the Firestone tires as well for the same reason.

 

good stuff guys.
looks like champions next time.

 

777 -

General consensus in these parts are autolites. I've used Accel in thr past have have gone back to their shortie plugs due to a lack a header clearance. In all honestly, not sure I've seen all that much of a difference. However, the shorties or "peanut" plugs do give better clearance and that means fewer burnt wires.

Archer

 

I hate changing plugs in my 440 cuda, I have found that the AC's R43s work the best for me.

 

I use auto lite in my 318 seems to work well with it, seems most like the champians here but i cant seem to have any luck with them, they dont seem to last long where autolites i can use for a long time. maybe cause its a small block and i imagine you- all have big blocks? I set gap at just a slight bit over 0.40, thats what they were set at when i bought the car.

 

.040 is a bit much, stick with .035 if you have a stock/elect ign. Now if you have a MSD things are different.. I have always used Autolite plugs

 

Can't say what works best in Mopar's but champion in Harleys are the worst. Used to DYNO hotrod Harleys every month thru the 90's and had a lot of tracking with them. Autolites always worked best.