My 4.0 Fuel injection conversion

[ThisGuyUKnow]

Just filled up and I'm sitting at 15.3 MPG now. We'll see if it gets any better, but that's about 3 or so better.

Axle gearing and tire size?

 

[tinman]

3.31 on the gears, and 31 inch tires(for now).

 

[ThisGuyUKnow]

3.31 on the gears, and 31 inch tires(for now).

15 mixed driving?

 

[tinman]

All in town driving.

 

[ThisGuyUKnow]

All in town driving.

Get some open highway tests, I'm thinking it is possible to touch up to 20 or higher hwy only. 3.54 or3.73 might be better for those 31s but I think you should get good results with 3.31.

I'm hoping that with my drive train(4.0,mpfi, nv3550 3.31, 30x9.5r15), I can touch between 16 and 17 combined driving.

 

[tinman]

I would really like 3.73 gears, maybe the next project, but I'll try to get some highway time on this tank and see.