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Automatic Trans.

Trans spline

You did not say 727/518 or 904/500 converter, so here are both:

727 - Non-lock-up 24 spline 1967+

727 - Non-lock-up 19 spline up to 1966

727 - Lock-up 23 spline 1978+

904 - Non-lock-up 27 spline 1968+

904 - Non-lock-up 18 spline up to 1967

904 - Lock-up 26 spline 1978+

The 518/500 are same as 727/904 LU

 

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