12.34MPG with 4.0

[1989Bii]

Does that sound about right with 33's and a 4.0?

 

[4.0B2]

what gear ratio? auto or manual? is it running good and smooth? right psi of fuel?

 

[Hahnsb2]

Gears? Kind of driving? I've gotten significantly worse than that (9.5MPG) and better (15+MPG), depending on where and how I'm driving.

 

[kunar]

have you corrected your odometer after the tire change?

 

[1989Bii]

Its a stock dana 28 from 89 so i guess it would be 410's. The transmission is auto and i'm driving it 55 miles exactly on the highway. I measured the distance using another car, my trip is still wrong cause of the 33's.

 

[4.0B2]

if your trip is wrong, its hard to calculate exact mileage. unless you do NOTHING but 55 miles a day....

 

[1989Bii]

What i did was, i filled it up before i left. I drove 55 miles EXACTLY, then filled the tank back up and divided the miles by the amount of gas i used and then i got 12.34. 12.34 is what it is getting highway, all im asking is if this is normal or should i be getting more?

 

[Hahnsb2]

Its a stock dana 28 from 89 so i guess it would be 410's. The transmission is auto and i'm driving it 55 miles exactly on the highway. I measured the distance using another car, my trip is still wrong cause of the 33's.

Auto combined with 4.10s isn't enough gear, you need 4.56s.

 

[1989Bii]

What are you getting with the 4.56s highway?

 

[4.0B2]

talked to a guy getting 16.5 or so with 33's and 4.56's with the a4ld..
if i can pull that off i'll be happy lol


edit: his 33's are bfg at's.. btw

 

[Hahnsb2]

What are you getting with the 4.56s highway?

Like 14, but I do 70+ and I'm turning heavy and aggressive super swampers.

 

[1989Bii]

well i guess i'll need to save up for some gears. Thanks for the input btw!

 

[adsm08]

Auto combined with 4.10s isn't enough gear, you need 4.56s.

I would like to point out that we don't KNOW that he has 4.10s. 3.45 was a much more common ratio that year.

 

[country0001]

I would like to point out that we don't KNOW that he has 4.10s. 3.45 was a much more common ratio that year.

I agree, I was thinkin 3.73's. That's what my 90's have.

 

[Hahnsb2]

I would like to point out that we don't KNOW that he has 4.10s. 3.45 was a much more common ratio that year.

Has nothing to do with year, if it was a factory auto, it should either be 3.73s or 4.10s, and it's a moot point, because it still needs 4.56s gears, which we know it doesn't have.