XJ Tcase Spline Count Question???

Boston Mangler said:

Hey Guys

What is the spline count of the XJ np231 that is behind the AW4 auto tranny?

Is it 21 or 23? I heard some older ones have 21 and some newer ones have 23. How can i be sure?

Thanks

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Nihil said:

1992 was the split year. Before that is was 21, after is 23. Not sure exactly about '92 though.

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