i finally threw some 4.10s in. lim slip too but my mileage isn't what i had in mind. i took a trip up north this weekend and roughly calculated 14 mpg at best. it was mostly highway. no excessive speeds. and i used my buddys trip mileage we reset at same time and mine was thirty somethin less than has lol. his truck is stock and speedo is corect. i have 36s those ole military tires. i know others such as coon has claimed to get 19 w 4,10s and 35s since its like stock 3.55s. i did have some stuff on top and tents n coolers n stuff in back though. could that have dropped fuel milage that much. i finaly got that recall done too.

 

A buddy of mine has a jeep and he usually keeps his roof rack off becuase he said that he gets 20-30 miles more per tank with it off. Also if you did any offroading that will lower it a bit too. Did you calculate millage with yours or your buddys trip reading? Your truck looks really good.

 

sry it takes me so long, my laptop died, so i dont get to a computer often. the roof rack haha, i just made it the day before we went campin, grabbed a few trees and some wood round the house. didnt cost anythin. so it doesnt stay on, yeah i used my friends trip reading if i used mine it would be way off. no more than a miles worth of messin around in the sand and dirt and maybe 15 20 miles of dirt roads. and thanks

 

i typicly see 17-18 highway at speeds of around 65-70. anything over 70 it drops quick. if i stay at 55-60 i can get 18-19. if i stay right at 55 i can almost get 20. the key is 1500-1700 rpm. and anything over 2000 the fuel gauge starts to drop. also those military goodyear 36's are bias ply, and very, very heavy. the bias always get lower economy.

 

so those tires could be hurting me alot then, i try to stay below 70 but that doesnt always work il have to try a lil harder. and thanks, i still have to call skyjacker when i get a chance. and do you think there is any mods you have that also help your milage?

 

i pretty much just have the basic hillbilly mods. cheap chip, icp and eot mods, homemade exhaust, homemade intake, homemade intercooler kit. i think that covers it all. and of course i ride on a 6 inch skyjacker, stock wheels, 315/75/16's, and 4.10's.

staying under 70 is the biggest factor for me. it doesnt take long cruising at 80 mph to drop the mileage drasticly.