Just read some of the info in the attachment from what I saw last night looks like it may be an 8 inch (DOOOO) will check 2night. Very informative piece though will archive that for when I am looking for a nine inch if thats what i end up doing.
I've accumulated a bit of links in my research on Fords. I was a Mopar man all my life until 2003 so now I am getting up to speed on Fords. I had a basic knowledge of them but little in depth knowledge. The internet is a wonderful thing!
A buddy of mine drag raced a 67 Mustang with an 8" rear end and manual trans. He said he made 7,000 RPM launches for 4 race seasons before he blew up the rear end. After hearing that I had no problem having him build the 8" for my wife's '66 Mustang with a street engine and automatic tranny. It's got an Auburn Posi unit in it with 3.25:1 gears and 26" tires.
8.8" are tough. Every mustang late model runs a 8.8". Dont worry about the strength, Its prob been fitted to you XL is it?, because it would have a narrower wheelbase than a XY or XA width falcon 9" diff. and those XK-XP rear wheel arches def wont acommodate anything more than stock width.. A mate has a XM sedan 302 5speed and runs a borg warner centura diff for last 3 yrs no probs..
i run apprx 365RWHP in my mustang with 8.8" no probs
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