Hey guys, so I have to drive about 60 miles on the highway 5 days a week for school and gas is obviously killing me even though its highway miles. Currently I have the factory champions which arent bad but I only have them because the dealer threw them on there..they have less than 10,000 on them but I'm going to be installing my Hipotek this week so figure I ll swap out the plugs. I have the 4.7 regular not HO and my current mods are CAI, Sonnax, side exit exhaust, and the Hipotek will be going in this week. What plugs do you guys recommend? Autolite 3922's or what? Thanks.

 

3922 are still too cold, they are recomended. For the h.o. The 3923's will be better, I would go with the ngk v-powers. They are an awsome plugs and cost the same as the autolites.

 

part number? does autozone carry these usually?

 

I am running the NGK 4644 v-power, I am very impressed with them over the Autolites.

 

The heat range of the plugs is what matters, not the brand or construction. You can get platinums with the correct heat range and be good as well. The autolites I currently use are the 3923's double platinum. Had 24's and then trailored in the mountains once and it took material off of my piston and completely fused together my plug.
Switching to 23's and problem was gone.
My 2 cents... 22's are too cold. Unless you got a supercharger.