3 speed gm tranny

Joe
10/16/09

I am trying to identify the trans I have.

tail housing: GM 25 3741456 E184 front bearing retainer: GM 28 3741458 main: 12 GM 8830210 K287

Thank you for your help! Has been sitting in my grandmas garage for 30 years and I want to get rid of it without throwing it in the dumpster.

Mr. Bowtie

The front bearing retainer casting number 3741458 is a Saginaw 3 speed manual used from 1958–1965.

The tail housing casting number 3741456 is a Saginaw 3 speed manual used from 1958–1964.

Check the maincase Casting number again as it doesn't match any of the production 1955–1975 casting numbers we have reference to.

Steve
7 months ago

Trying to identify 3 speed trans: Main case – GM 5 3834197 Tail – GM 12 3741458 G303 Clutch Bearing Retainer – GM 8 3741458 Any help appreciated. Thanks.

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