I have the Bosch Fusions in now. They were great to start with but I am concerned that iridium/platinum are really not the best for the 4.7L.

I have been reading a lot about the NGK V-Power plugs for the 4.7. There are two versions, 2262 and the 6987. They both work for the 4.7L so I am not sure which would be best.

I have tried the Autolite 3923's in the past but I have an issue with changing them every 15K because of the temperture being one step colder and tip being so short. 15K seems like a too short of a life span.

Any recommendations or info on the NGK V-Power (or any other for that matter) would be appreciated.

 

I changed the plugs on my 06 ho at 50000 miles. I put in the bosch ones with 2 electrodes. Ran fine but gas mileage went down noticeably. After reading on here I decided to try the 3922's it was only $14. Gas mileage increased by 1 1/2 or maybe more on the highway. It would appear that it's best to stick with regular copper plugs in these trucks?

 

Beating a dead horse, yes copper seems best.

 

Well my buddy at the shop just called me he said that i had sum ****ty *** plugs in my truck was surprise it was running for spark plugs and fuel injectors going to be blown and with taxes ect going to be $275. i got him putting in the NGK V power he said he never used them before but he likes the look of them. So I cant wait, no more ****ty driving if this doesn't fix what is wrong only thing i ca think it be the shocks or something is wrong that idk what it is and probably have to go to the dealer.

 

Well i just got back as soon i went and picked it up i ended up driving it having fun problem solved injectors are cleaned and the ngk's are sweet! my rpms are even up alittle bit at WOT!!! truck runs alot smoother. apprently sumone had the auotlights in it and they were "****ty plugs" he said. also he poped the computer on for me cuz he knows about the oil light that pops on when its cold he said its the oil switch? or oil sensor? its acting alittle goofy. now ive had my ob2 computer on and it could never pick it up. ive seen someone replaced theres? how much is it and where does it go?

 

Sounds good to me. Thanks!

 

Digging this up! So if I do 212 cams with a custom tune among the other mods, should I go hotter or colder than stock? With a 91-93 octane fuel. I'm looking into NGK, they recommended BKR7EIX-11 with my mods, but couldn't hurt to ask more than one person.

 

Recently replaced the original Champions for NGK Iridiums. 30k on the originals. I was impressed how clean they looked with approximately .045 gap wear. Mileage was terrible before, so they must have been due. Runs great now, with better mileage, and opens up to full throttle with a sweet growl. Cleaned the throttle body while I was in there. BTW NGK plugs come with a .044 gap. This is not to be changed. I checked with them. 4.7 "P" code engine, with factory intake.

 

What the devil is a p code...
Any recommendations to my previous post?

 

My guess is he is talking about the 4.7L V8 Vin designation on the Rams, like ours are N or J depending on which 4.7L we have. And IIRC the Rams with the Ps are Flex Fuel Models with the exception of California, New York, and I cant remember the other states.