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1986 8.8 Spline count?

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Old Aug 23, 2009 | 12:44 AM
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Question 1986 8.8 Spline count?

I have a 1986 F-150 with the 8.8 rear and I want to know if it's the 28 or 31 spline so I can get a posi unit for it.
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Old Sep 1, 2009 | 04:10 AM
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Well since no one knew, it turned out to be the 31.
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Old Dec 29, 2009 | 01:01 AM
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You have to count the splines on the axel. Sorry it was late.
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