The SM465 is a heavy duty, granny, 4 speed transmission used in Chevy and
GM trucks. The large ribbed cast iron case makes it easy to identify.
It is an excellent 4 speed to swap into a Jeep with a Chevy engine. The
SM465 has an unusual large input bearing retainer, it does not use the
standard GM size. It is normally best to buy a matching bell housing with the
transmission. As far as I know, this transmission has only been used with
Chevy engines from the factory, so you will not find BOP/BOC bell housings in
the junk yard for this transmission. This means a special after market bell
housing must be used to use the SM465 with a Buick engine such as the 350 or
225.
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