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Axle spline count


Shadowrider6661

D RANGED
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Off grid Northern Arizona.
Vehicle Year
1997
Make / Model
Ford
Engine Type
4.0 V6
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Stock
Transmission
Manual
2WD / 4WD
4WD
Total Lift
4"
Total Drop
N/A
Tire Size
33 x 12.50 x 15
My credo
Drive it, Break it, Fix it, REPEAT !
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].
 


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

D RANGED
Supporting Member
U.S. Military - Veteran
ASE Certified Tech
Joined
Aug 23, 2017
Messages
331
Reaction score
129
Points
43
Age
63
Location
Off grid Northern Arizona.
Vehicle Year
1997
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
Stock
Transmission
Manual
2WD / 4WD
4WD
Total Lift
4"
Total Drop
N/A
Tire Size
33 x 12.50 x 15
My credo
Drive it, Break it, Fix it, REPEAT !
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

D RANGED
Supporting Member
U.S. Military - Veteran
ASE Certified Tech
Joined
Aug 23, 2017
Messages
331
Reaction score
129
Points
43
Age
63
Location
Off grid Northern Arizona.
Vehicle Year
1997
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
Stock
Transmission
Manual
2WD / 4WD
4WD
Total Lift
4"
Total Drop
N/A
Tire Size
33 x 12.50 x 15
My credo
Drive it, Break it, Fix it, REPEAT !
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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