28 or 31 spline axles in 90 f150?

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01-31-2004, 06:19 PM

mnstang

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28 or 31 spline axles in 90 f150?

i have a 90 f-150 with the 302.... 2wd.
it obviously has the 8.8, but i'm wondering if it has the 28 or 31 spline axles.
(putting in a limited slip and need to know)
thanks guy and gals

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01-31-2004, 07:07 PM

Mil1ion

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Do you have the buck tag that is on the diff , info ?

The best way to figure it out is to pull one an see if the axle tapers down to splines (28) or runs from smooth to splines without a taper (31).

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01-31-2004, 07:14 PM

mnstang

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i looked on the tag on the rearend... but it was pretty rusted and i couldn't really make anything out on it.

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01-31-2004, 07:24 PM

Mil1ion

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Let's just say then, " Chances are then,they are 28 spline.

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01-31-2004, 07:54 PM

fordman300

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my 90 has 31 spline axles
i dont think ford ever used 28 spline axles in the 8.8 under trucks just under cars

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01-31-2004, 08:31 PM

MustangGT221

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This should go in the axle forum..but...

The trucks and vans used 31 spline...not 28 spline axles.

The rangers, mustangs, t-birds, town cars..etc...used 28 spline.

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