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.
Rumor is, the late 70s to 81 GMC trucks were available with a
Oldsmobile 5.7L diesel and SM465. The bell housing used in this truck
would be useful to mate an SM465 with a Buick engine since this engine
should have the BOP/BOC pattern. The other option to mate a Buick or
Caddy engine to an SM465 is get a BOP/BOC bell housing machined out.
This adds to the cost and who knows if it would compromise the
strength of the bell housing.
| Transmission |
1st |
2nd |
3rd |
4th |
5th |
Rev |
| SM465 |
6.55 |
3.58 |
1.57 |
1.00 |
|
NA |
Onboard
Air
Home-built
Serious Skid-Plate protection for the Oil Pan for under 20
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