fuel mileage
Thread Starter
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Senior User
Joined: Jan 2008
Posts: 226
Likes: 0
From: Emmett, ID
fuel mileage
my fuel mileage is bad and comparing to what some friends are getting i decided to us the calculator here on FTE to find my gear ratios in 4th gear it shows that i have 4.56 ratios, in 5th gear i have 3.65 ratios does any of this make sense? I thought i had 4.10's HELP!
Posting Guru
Joined: Aug 2004
Posts: 2,417
Likes: 4
From: Braham MN
what does the tag on the door say???? or the axle if you have looked there is a tag on the rear pass side of the diff cover.
I have never used the calculator, I assume it asked for tire size trans gear ratio and RPM/MPH.
Diesle Rod
I have never used the calculator, I assume it asked for tire size trans gear ratio and RPM/MPH.
Diesle Rod
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Senior User
Joined: Jan 2008
Posts: 226
Likes: 0
From: Emmett, ID
yes according to the tag on the door i have 4.10's but when you put all the numbers in the calculator (wheel diameter, rpm, and mph) i get a different number. i wonder if the difference is in my tranny?
Last edited by farmer ford; Apr 8, 2008 at 10:06 PM. Reason: more info
Cargo Master
Joined: Jul 2006
Posts: 2,756
Likes: 38
From: Nampa, ID
Haven't heard from you in awhile. Just making sure you're still around.
I've been going to a monthly dinner meeting with a local diesel club. We meet in Caldwell at the chinese buffet. IDPisan (Jeff) introduced me to the club. They're a good bunch of folks (even though most of them drive Dodges and Chevys
).
I've been going to a monthly dinner meeting with a local diesel club. We meet in Caldwell at the chinese buffet. IDPisan (Jeff) introduced me to the club. They're a good bunch of folks (even though most of them drive Dodges and Chevys
).
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From: Emmett, ID
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Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
The calculator is giving your final drive ratio which takes into account all of those numbers. Your axles gears are only part of the final drive equation. You are comparing apples to oranges.
Fleet Mechanic
Joined: Mar 2007
Posts: 1,313
Likes: 6
From: Rio Rancho NM
My 96 says XLT in red letters and has 4.10s. Isn't the XLT a trim/interior package?
Tuned
Joined: Mar 2006
Posts: 466
Likes: 0
From: PNW
Powerstroker & 4x4Bronco,
yes the XLT is the trim package. I have a 97 tho, and i think they only did the "heavy duty" thing in 97. My truck is XLT too, but it does not say XLT on the badge. this is just something me and my 2 other friends with 97's noticed with our trucks.
yes the XLT is the trim package. I have a 97 tho, and i think they only did the "heavy duty" thing in 97. My truck is XLT too, but it does not say XLT on the badge. this is just something me and my 2 other friends with 97's noticed with our trucks.