well lets put it this way the most i ever got was 16 and that was all on going slow as hell, when i drive nomally i get like 13.6 -14.5 thats it, gas isnt too good with these trucks, ive seen bigger trucks and heavier trucks get more mpgs then we do!

 

well dodge was never knownfor there mpg

 

My mpg with the 4.7L averages 14 to 15 in warm months and now that the gas stations switched to the winter blend I get 12 or less. I do all city driving and drive real easy. What underdrive pulleys are available for our trucks?

 

ASP -Part# ASP501150. you will need a shorter belt. they also sell that for like 30 buck or around there

 

I got that before the tires and wheels. I cant calculate now untill I get my speedo fixed because when the truck says im going 85 my gps says im doing 93