Who makes Mopar Iridium sparkplugs?

NGK is the only supplier of the OEM Mopar Iridium plugs The Mopar 5.7L Hemi engine is the only listed application for these plugs. This is the new 100K mile sparkplug Jeep is using in all 2014 and up WK2 5.7L hemi engines and it can be used in earlier 2011~2013 Hemi equipped WK2’s.

What was the spark plug gap on a 383 2bbl?

The basic 383 2bbl plug was J14Y, gapped at .035″ All plugs gapped to .035″ back then. The 383 4bbl was usually J10Y, gapped to .035″. The 400 2bbl used J13Y, .035″ with the Chry electronic ignition. Strongly concur that the coolest plug that doesn’t foul in how you normally drive.

What should the spark plugs be on a 383 Stroker?

Enter your ride HERE to be a part JUNE’s Ride of the Month Challenge! Just wondering if you guys could maybe give me a couple recommendations for some spark plugs on a 383 stroker. Motor has 9.5:1 compression with 487X heads. I was thinking either Champion or NGK plugs, but I dont know what the gap should be???

Which is the best spark plug for Mopar?

There are many different options and opinions as which may be best. AC R43S are good…Champion RJ-12YC are good also so are the NGK equals. I use Champion UJ -11G or Champion HO-8A both still available but hard to find.

Is there a spark plug gap with MSD 6A?

I’ve run .050 gap with the MSD and it works quite well. The thought is that the plug has to have more energy to jump the gap and that should allow for a hotter spark. One benefit from that is it makes the plug less sensitive to fouling. Heat range you will have to figure out on your own…

What’s the spark plug for a 70 RR / 383 auto?

Start with RJ12YC gap at .035, and go from there. Would it be the same spark plug if it were a 383/4-spd set-up? I’m just about done putting my new motor together and was wondering about plugs myself… I had better luck with the Autolite equivalent in my 70 383 auto Super Bee, but lots of folks swear by those Champions. Cherry valley il.

What’s the best spark plug for a 1970 Mopar?

New Mopar owner. What is the correct/best spark plug to use for a 1970 RR 383 automatic? Went to the Champion web site and they do not even list on for my car…..kinda weird….. Start with RJ12YC gap at .035, and go from there. Would it be the same spark plug if it were a 383/4-spd set-up?

What should the gap be on a brisk spark plug?

Excessive changing of the spark plug gap setting will result in weakening of the spark plug ground electrode and can lead to breakage. Also, the spark plug gap should never exceed.055″ unless pre-set by the manufacturer. Most Brisk and other manufacturer sparkplugs are preset to around 0.75mm – 0.8mm.

Who makes Mopar Iridium sparkplugs?