Ecofx86

call me crazy but i have towed a 16 ft trailer with a bobcat t180 on it. I have 3.15 gears lol.

McCarthy

THREE POINT ONE FIVES? If you upgraded to 3.55's or 3.73's you would fall in love with your truck so much more.

packplantpath

Are you sure about those rpms? That sounds quite low for 70 mph. I have 3.31 and I would swear it is closer to 2000 rpms at 70 mph, though I could be having a brain fart.

Rugger

Did you buy a truck or a dragster? Put your foot in it and drive. Don't over analyze it. Love your truck.

McCarthy

billf

I was writing from memory so I may have been off a little, but not much.

Pale Screw

I have 3.73s ELD with the 5.0 4x4 Screw with factory 18" rims. I have no problem getting 19-21mpg mixed. Hwy speeds of 70 tach about 2000rpm.



Realize that it can be very expensive to regear a 4x4 (2 axles). So go with the bigger gear now. Plus it might benefit you in the long run if you decide to put bigger tires on later.

Ecofx86

Yes, 3.15 gears. Has anyone tired 4.11 or is that to low of a gear?

NitrogenJunkie

[QUOTE=troutspinner;1037415]Me again

I just noticed something interesting about this thread........

Only one responder has an Ecoboost in their sig, he recommended 3.55 (I did too). No other responder has said they actually own an Ecoboost in their reply. Interesting?

Not true... see post #6

packplantpath

Well, since we need to qualify, I have a 4x4 eco scab with 3.31s. I have towed about a max of ~5000lbs so far and it doesn't even know it is back there. No issues at all Mountains or heavier weight (or larger tires) are the only reason to go 3.55 or 3.73. The eco has plenty of low end grunt even with the 3.31s to pull whatever you need.

I have yet to try it in the mountains. And may not for quite a long time.