F-150 4x4 Axle ration question

I really didn't realize that they were "ration*ing axles, but I guess that it makes sense since most people only use one rear axle per vehicle. ;-)

" BOB" > figure out what my tow rating is so if you happen to know that as well....

I believe he was asking about gear ratios.

Al

What is on the metal tag attached to the rear end "pumpkin"?

There should be some numbers, including your gear ratio.

Spdloader

Look on the rear axle by the carrier housing (the pumpkin, the differential etc etc..). There should be a tag with the ratio on it, and it should read something like 373 or 3L73. The 373 means you have a standard open 3.73 carrier and the 3L73 means you have a "traction-lok" differential. "Traction-lok" is just Ford's version of a Posi-trac.

I believe the normal gear ratios were: 3.56, 3.73, 3.93, and 4.10. I think the 4.10 and the 3.73 were the most common.

differential

Look on the tag on the door post.

It's not on the door post.

why did i write ration instead of ratio? i dunno... i must have been thinking of how long it would take me to save enough for a new truck on the $20.00 per week spending RATION my wife allows me to have... oh well, that's too depressing to think about.

however, i did look on the door sticker and it doesn't say. unless i'm a moron and don't know how to read it which is totally possible. i haven't looked on the real axle pumpkin yet but i will.

i was (when starting this thread) going to rent a travel trailer that weighed about 4,500 lbs. but have since decided to go with a motor home.

wouldn't it be nice to have a truck that you wouldn't have to worry about what you towed? something like an F-350 or 450? maybe even a 3500. oh well - "2 curtain climbers and a new house payment = no new truck for daddy" says momma. mmmmmm.... power stroke, cummings, duramax...... mmmmm

There should be a label on the door post with an alphanumeric code on it

The code is something like if the 8th digit is a H then the ratio is ???

Anyway if you have the owners manual you should be able to decypher the axle ratio.

Are you telling me that there is no axle code on the door post?

There is a Vehicle Certification (VC) Label on the door or the door lock pillar. The axle code is located on the bottom of the label, just right of center. It's a 2 or 3 digit code. The codes for 1997 F-150/250LD are as follows.

- 18 - 3.08.

- 19 - 3.55.

- 26 - 3.73.

- 27 - 3.31.

- H9 - 3.55 Limited slip.

- B6 - 3.73 Limited Slip.

On 4X4 applications, these numbers will be followed by the number 2

Hope this helps

JP

Click on the link below then enter your information.

I dont think the calculator takes in to consideration the over drive transmissions.

So if you have a 5 speed standard transmission, 4th gear would be the one to run the test.

Same goes for automatics with overdrive. run the test in the second to the last gear.

If no overdrive run the test in your final gear.

No, but if you look at the quoted messages below, you'll see that the OP requested what is the axle ratio in my truck. YOU answered Look on the door post.

The ratio is NOT on the door post. Now, if he had asked for an axle CODE, you would have been correct.

My mistake. From the door post he could have derived the axle ratio by way of the axle code.

The axle code on your door post indicates what it is and I found a web site about that nice stuff. They main page:

Tyr>