What spline axal in 1973 9in mustang rear?

1

1973mach1

Member

May 19, 2003

457

0

16

PA

Jan 29, 2004

#1

• Jan 29, 2004

• #1

ANyone know what axal the 1973 mustangs with the 9in rear used? I think theres like a 27 and a 32? Not sure which I need. IM thinking it might be cheaper to get a allready rebuilt rear with 3.70posi and install it myself then to get mine rebuild as it is now with stock 2.75 and open rear.

Thanks,
Jim

 

F

fastback brian

Founding Member

Jul 15, 2002

540

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0

So Cal , I.E.

Jan 29, 2004

#2

• Jan 29, 2004

• #2

If its not a factory CJ, boss 351 or 429 then you got 28 spline axles.

 

9

96 DOHC Cobra

Founding Member

Oct 14, 2001

542

0

16

Cerritos, CA

Jan 29, 2004

#3

• Jan 29, 2004

• #3

It could be either 28 or 31 spline. Most likely, it's got 28. The only 73s that I've seen with 31 spline factory axles have been 351C 4V w/ four speeds.