Help deciphering axle ratio
#1
09-30-2018, 11:12 AM
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Help deciphering axle ratio
We are considering a new tow vehicle, an older Ford Expedition. The VIN gives somewhat confusing information regarding the axle ratio, which helps determine towing capacity. Here is what the VIN decoder says:Axle Ratio (:1) - Front3.73 3.31 min 3.73 maxAxle Ratio (:1) - Rear3.73 3.31 min 3.73 max
So is it 3.73 or 3.31? It makes quite a bit of difference to towing capacity,
So is it 3.73 or 3.31? It makes quite a bit of difference to towing capacity,
#2
09-30-2018, 02:51 PM
I've been attempting to figure this out myself. I have a 2011 Navigator. On the vehicle identification placard on the door jamb, drivers door area, there is an area that has axle. Underneath it there is a code. Mine is 16. My understanding is that means that the ratio is 3.73. Other way to do it is jack up rear of vehicle and rotate rear wheel 2 revolutions and see how many revolutions the drive shaft rotates. 3 and 3/4 revolutions is the 3.73. That's what I had and that's what I discovered when I did the rotation test. Good luck
#3
09-30-2018, 04:11 PM
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#4
09-30-2018, 04:42 PM
#5
09-30-2018, 08:25 PM
Looking on your door jamb won't tell you a whole lot, in my opinion. I think most of these came with the 3.73 but I can't guarantee that. I have looked at replacement ring and pinion gears and they lost 2 ratios, 3.73 and 3.55. The spin test is infallible but axle code 16 has 2 different ratios on the vin decoder websites that I've looked at. Try this one for giggles.
Identify Your Ford Truck Axle From The Door Sticker ? Blue Oval Trucks
Identify Your Ford Truck Axle From The Door Sticker ? Blue Oval Trucks
#7
10-02-2018, 08:53 AM
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#8
10-02-2018, 09:20 AM
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#9
10-02-2018, 09:53 AM
Fleet Mechanic
https://www.google.com/search?q=ford...hrome&ie=UTF-8
https://www.blueovaltrucks.com/tech-...-door-sticker/
Axle: 3.31
Doesn't matter what tires you have you're limited to the payload listed on the door jamb.
And fuel does not count against your payload, that is part of the truck weight.
https://www.blueovaltrucks.com/tech-...-door-sticker/
Axle: 3.31
Doesn't matter what tires you have you're limited to the payload listed on the door jamb.
And fuel does not count against your payload, that is part of the truck weight.
#10
10-02-2018, 09:56 AM
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#11
10-02-2018, 11:09 AM
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