Gear ratios
Im trying to determine the best overall gears for my
06 dodge ram 1500 laramie quad cab 4x4 5.7L
Hemi. I currently have 4" lift with 35x12.50r18 Toyo
Open country M/Ts. Its come time for me to
replace my pinion bearing because I can hear it
waring, but I was considering regearing the truck
while I'm there. I would want the front and rear axle
ratios to match up so I could run them together. I
currently get about 12mpg on average. Best fuel
mileage at 50mph (highest gear at lowest rpm), but
this is only because the 4 cylinder reduction eco
system never kicks in anymore due to the heavy
load. I hit it going downhill at times, but never
anymore. I'm burning up gas all the time running
these stock 3.92's. What would it take to get my
Eco mode back? But maintain power and speed
when I want. 4.10's be enough to get it the torque?
Or do I need to shoot for 4.56's? And if so, wouldnt
that be so high it would defeat the purpose of
reaching the 4 cylinder reduction mode? Also,
whats that mode called? MPS? Ive been told
before I have forgotten unfortunately. I appreciate
any helpful information.