Axle spline count


Shadowrider6661

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I live off grid on 80 acres in Northern Arizona.
Vehicle Year
1997
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Ford
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4.0L C6 built by a friend who used to work for Ford Racing
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Manual
My credo
Drive it till it breaks, fix it and do it again !
Is there anyway to determine if my axles are 28 or 31 spline without removing the axles ? The axle code is 96, and the tag ID is [S354F 3 73 8 8 7A16].
 


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adsm08

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31X10.50X15
Assuming this is the factory axle in your 97 they are 28 spine.

The 28 spline tubes are smaller around, but I don't know the measurements off the top of my head.
 

Bird76Mojo

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The main tube on the 31 spline 8.8" axle uses 3.25" u-bolts.. I do know that much.
 

4x4junkie

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2.80" dia at the U-bolts = 28 spline
3.25" dia at the u-bolts = 31 spline.

An exception is 2010, 2011 disc-brake Ranger 8.8s, they have 3.25" tubes but are 28 spline (they also neck down to 3" at the pumpkin).
 

Shadowrider6661

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I live off grid on 80 acres in Northern Arizona.
Vehicle Year
1997
Make / Model
Ford
Engine Size
4.0L C6 built by a friend who used to work for Ford Racing
Transmission
Manual
My credo
Drive it till it breaks, fix it and do it again !
2.80" dia at the U-bolts = 28 spline
3.25" dia at the u-bolts = 31 spline.

An exception is 2010, 2011 disc-brake Ranger 8.8s, they have 3.25" tubes but are 28 spline (they also neck down to 3" at the pumpkin).
I thank you for responding to my thread. You're answer is greatly appreciated. Now I can order the parts necessary to get my truck back on the road !
 

Shadowrider6661

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Location
I live off grid on 80 acres in Northern Arizona.
Vehicle Year
1997
Make / Model
Ford
Engine Size
4.0L C6 built by a friend who used to work for Ford Racing
Transmission
Manual
My credo
Drive it till it breaks, fix it and do it again !
My thanks and appreciation go out to everyone that responded to my question, it makes the rebuild aggravation free [at least for getting my parts].
 


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