Go Back   Ford Expedition Forum > Ford Expedition Forum > 1st Gen - 1997 - 2002

Register to remove these ads.

1st Gen - 1997 - 2002

Rear Gear Ratio?

This is a discussion on Rear Gear Ratio? within the 1st Gen - 1997 - 2002 forums, part of the Ford Expedition Forum category!
Is there a way to tell via the VIN what is my rear gear ratio?...

LinkBack Thread Tools Display Modes
Old 08-31-2012, 08:08 AM   #1 (permalink)
Full Access Members

Join Date: Oct 2011
Location: Mass
Posts: 455
Default Rear Gear Ratio?

Is there a way to tell via the VIN what is my rear gear ratio?
'99 XLT 5.4, 4x4, 3rd row, rear heat and AC
Tow Package
New front hubs
New Motorcraft spark plugs
Definity Dakota LT265/75/16
If anyone's rear shock mounts to the frame are rusted PM me and I will show you how I fixed mine
New rocker panels welded in
Jay87LX is offline   Reply With Quote
Old 08-31-2012, 02:16 PM   #2 (permalink)
Registered User

Join Date: Aug 2012
Location: Kansas City Missouri
Posts: 20
Default Gear ratio

Door tag on drivers door has gear code under axle, H is 3.55 most common, or H9 is 3.55 limited slip fila571
Fila571 is offline   Reply With Quote
Old 08-31-2012, 05:28 PM   #3 (permalink)
Thermo's Avatar
technical advisor

Join Date: Apr 2011
Age: 45
Posts: 1,407

Jay, like was mentioned, look on the door tag under "AXLE". You should see either an "H" followed by a number or an "L" followed by a number. From there, you can get on the internet and search on "ford axle code XX" where XX is the code you found in the door jam. You will find out more info than you ever wanted to know.

With that being said, as long as you have not messed with the setting of your speedo (ie, getting your ECM flashed), in short, if you are turning 2150 RPM at 72 MPH, you have 3.73 gears, if you are turning just under 2000 RPM, you have a 3.55, and if you are down around 1900 RPM, you have the 3.31 rear end. 3.31 rear ends are very rare and really only came in the 97/98 trucks with the 4.6L motor.
Official Member of the Lifted Expy Club
Thermo is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

GM Truck Forum
Ford Raptor Forum
Chevy Tahoe Forum
Chevy Cobalt Forum
Chevy Camaro Forum
FJ Cruiser Forum
Ford Truck Forum
88-98 GM Truck Forum
73-87 Gm Truck Forum
Dodge Ram Forum
Chevy Equinox Forum
Chevy Cruze Forum
Jeep Liberty Forum
Jeep Forum
Dodge Ram SRT10 Forum
Chrysler 200 Forum
Scion xD Forum
Scion xB Forum
Dodge Challenger Forum
Scion FR-S Forum
Softball Forum
SRT Forum
Nissan Titan Forum
Buick Enclave Forum
Cadillac Forum
Cadillac XTS Forum