Ford 9"
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Junior User
Joined: Feb 2001
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Ford 9"
I have a 1973 F100 Ranger 2wd with a 360 and C-6. I always heard that the F-series had 31 spline axles in the 9". I recently found out that some have 28 spline. Is one more common than the other? Are the 31's for 4x4's only or are they an option for all? I just wanted to know if there is a way to know without pulling an axle.
Thanks
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Posting Guru
Joined: Feb 2002
Posts: 2,404
Likes: 3
From: Cleveland, WI USA
Ford 9"
[updated:LAST EDITED ON 03-Apr-02 AT 11:41 AM (EST)]I just went thru this at the junkyard last weekend. Counting the splines inside the carrier is a pain!
Someone correct me if this is wrong, please. There should be a metal tag on the diff. with numbers stamped into it. One of the numbers in the corner is a 4 digit number like ?28? or ?31? that shows the 28 or 31 spline. That's how we found my 31 spline in a barrel of diffs.
Also, check the posts in this forum titled:
Ford 9" information page --- good 9" tech page
axle guide and identification for 9'' ford
They both have excellent links to 9" info.
k.
Someone correct me if this is wrong, please. There should be a metal tag on the diff. with numbers stamped into it. One of the numbers in the corner is a 4 digit number like ?28? or ?31? that shows the 28 or 31 spline. That's how we found my 31 spline in a barrel of diffs.
Also, check the posts in this forum titled:
Ford 9" information page --- good 9" tech page
axle guide and identification for 9'' ford
They both have excellent links to 9" info.
k.
