373 rear gears

Seen a post elsewhere that said someone got 373 gears made a big difference on gas mileage and still able to pull fine.
Any truth to this I would love to fine my way into the low 20’s in gas mileage
It is always nice to dream
I didn’t get this truck for gas mileage, I love how it rides, also I am 6’4” need lots of head room, after my spine surgery in my neck really hard to get into my wife’s Toyota Corolla (neck doesn’t move like it once did) good part is pain free. My Tundra is a 1794 so sweet in every way.

 

My opinion on this is that it would have the reverse effect. If anything, you would get worse mileage than now. This would be the equivalent of putting on like a 37” or 40” tire. You wouldn’t be adding the weight, but the truck would see it as higher calculated load and keep you in lower gears longer. It would also be a dog driving around. It would lug quite a bit and feel super slow.

 

The lowest gears that Toyota puts in any Tundra since 2007 are 4.10; and there's not exactly any demand on the aftermarket to make numerically lower gears.

 

That is what I thought

 

3.73 is the opposite direction. You wanna go steeper for better mpg.