Posted By: Carlen
440 spark plug choice - 10/11/12 04:13 AM
id like your advice on a spark plug choice for this newly rebuilt engine. 1971 dodge charger 440 4-speed, dana 354 gear, bored .40, 10 to 1 comp. 525 comp cam, stock 750 carb, stock intake and HP exhaust manifolds, 2 1/2 dual exhaust. electronic ign conversion. thank you for your sugjestions
Posted By: Cab_Burge
Re: 440 spark plug choice - 10/11/12 07:03 AM
Autolite #84, Champion old # RJ12YC Accel#34
Posted By: CrAzYMoPaRGuY
Re: 440 spark plug choice - 10/12/12 05:07 AM
I'm the only MoPar guy who would toss the Champions, and add NGK to the list instead?
Posted By: Jwilli500
Re: 440 spark plug choice - 10/13/12 01:50 AM
I run Autolite #85s in my 383.
Posted By: 440charger500
Re: 440 spark plug choice - 10/14/12 08:50 PM
My 440 seemed to like the Autolite AR73 plugs best.
Posted By: Rug_Trucker
Re: 440 spark plug choice - 10/14/12 09:04 PM
I will take a Champion over a new Autolite. Autolite is Chinese built.
I just do V-Power NGK's in everything.
Posted By: therocks
Re: 440 spark plug choice - 10/14/12 10:30 PM
Ran Autolites for 40 years.Changed to NGKs about 4 years ago.My 125 440 street driven likes them.I used Autolite race plugs before the NGKs.Seemed to miss with them.Plenty of miles on the NGKs and no problems.Rocky
