Restoring - General discussions that span across many different groups of years and models > Drivetrain

8.75" gears in a 9" carrier for hi-performance mustangs

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OldMil:
Hi All,
    I kinda kicked up a hornets nest on facebook.  I saw the attached info from the Fordification site and also kevinstang9" site that Ford engineered and installed 8.75" diameter ring gears in 9" cases on a lot of cars.  The link to the site is https://www.fordification.com/tech/rearends_ford02.htm  I'm just wondering if anyone has first-hand knowledge of this.  Thanks in advance...Jack

OldMil:
Another question- according to the attached document above, are there any Ford parts numbers available to identify the related 8.75" gear?

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