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It is listed on your rating plate - the last 3 digits of the Axle code is the ratio. The books show that you could have any of the following ratios, depending on which axle was installed:
3.00, 3.25, 3.50, 3.54, 3.70, 3.73, 4.09, 4.10, 4.11, 4.56, and 4.88. Some of these are for the 1/2 ton, and I think the 4.88 was only available in the 1 Ton.
Code 38 in my book is for a Dana 60 axle with a load rating of 5200 lbs and a ratio of 3.73.
My guess is that will be a little low for the highway, but not as low as the real stump pullers. A good compromise - but not the greatest for economy in a daily driver.
yeah i thought i had some knid of low gears cause it feels like its revving pretty high in the freeway.but theyre allright i just wanted to know what kind of gears i had so in case i want to change em.thanxs for all the information
oh also now that i know what kind of gears i have what axle codes are for the 3.50 or 3.54 ,3.25 so i could look for this at the junkyard.over here in california you see them somewhat and instead of taking the rearend apart just to find out it has the wrong gears.like this i could get a rough idea on the ratio before getting to work.
The Rear Axle code: The first two digits represent the rear axle and the third represents the front axle, if applicable.
FRONT AXLE CODES
Capacity
Code
5,000# Ford A
5,500# B
6,000# C
7,000# D
3,500# Dana 6CF HD K
3,000# Dana 44 lock L
REAR AXLE CODES
Ratio & Type Code
3.54 - Dana 5250# 37
3.73 - Dana 5250# 38
4.10 - Dana 5250# 24
4.56 - Dana 5250# 25
3.54 - Limited Slip Dana 5250# C7
3.73 - Limited Slip Dana 5250# C8
4.10 - Limited Slip Dana 5250# B4
3.25 - 3330# Ford 17
3.50 - 3330# Ford 08
3.70 - 3330# Ford 09
REAR AXLE CODES
Ratio & Type Code
4.11 - 3330# Ford 05
4.00 - 3300# Ford 02
3.70 - 3300# Ford Limited Slip A2
3.50 - 3600# Ford H2
4.09 - 3600# Ford H3
4.10 - 5200# Dana 70 27
4.56 - 5200# Dana 70 28
3.73 - 5200# Dana 70 36
4.88 - 5200# Dana 70 22
4.10 - 7400# Dana 70 Limited Slip D7