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How to identify what tranny a 203 came behind?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by dawson444, Nov 28, 2002.

  1. dawson444

    dawson444 1/2 ton status

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    I am going to be going to look at a 203 in a few days. How can I tell what tranny it came behind? There isn't an adapter. Thanks!
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Count the input shaft splines.

    10 splines = 465
    27 splines = 350
    32 splines = 400
     

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