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Posted by: justin one ()
Date: January 22, 2018 12:35PM

I have what I believe to be a 1966 Saginaw 4 spd tranny which uses the 6 bolt attachement. I found two numbers on the outside- 859956 and 3858954 . I am trying to determine when it was manufactured.

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Posted by: schuls1 ()
Date: January 22, 2018 12:52PM

The date code should be stamped on a boss, close to the bottom, right edge area of the side cover, and to the left of the accelerator stud on the tranny.


SW Missouri

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Posted by: vairchet ()
Date: January 22, 2018 01:12PM

Case and cover part numbers.

Chet in Ramona

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Posted by: RexJohnson ()
Date: January 22, 2018 09:14PM

The stamped numbers I believe might be the date it was assembled (do not know this for sure) and are the month-day only with no year. The stamping will start with an "R" for a 4sp or an "S" for 3sp then the numbers. They used a "T" for the PG's but you really don't have to find the "T" to know what you have with them. There is a casting date that is a capital letter for month, two digit number for the day and then a single number for the year. I believe this will be below the part number and near the sift rod on the side below the cover. This date code looks like it was a tag that was screwed into the mold.

RJ tools

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