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Good useable 68 to 78 GM SM465 counter shaft.
The front counter shaft ID bearing size is 1.338" which mates with the case with a 2.440" bored hole.
Please verify which case you have by measuring the bored hole for the front counter shaft bearing.
NOTE: the late design front counter shaft bearing uses a counter shaft that uses a bearing with a 1.400" ID size, and the case bore is 2.250".
Gear tooth count is 14 17 23 36 40, which the same tooth count for early and late design.
Verify this is the counter shaft you need by verifying your front bearing diameter OD in the front of case, we have provided.
