SM 465 Manual Transmission

SM 465 4 Speed Transmission Specs, Gear Ratios, & Information

 

 

SM 465 Gear Ratios:

Gear:
1
2
3
4
R
Ratio (:1):
6.55
3.58
1.57

1.00

 6.09

 

 

 

 

SM 465 Transmission Specifications:

Transmission:

Muncie SM 465 4 Speed Manual transmission

Manufacturer:

General Motors (Muncie)

Production Run:

1982 - 1991 GM diesel powered trucks

Input Torque Rating:

465 lb-ft

Transmission Weight:

Approx. 175 lbs

Additional Specs: - SM = Synchro-Mesh.
- Cast iron case & top cover.
- Toploading 4 speed reverse.
- Gears 2, 3, & 4 are synchronized; R & 1st gear are not.
- 12 in case length.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The SM 465 4 speed manual transmission is an industry favorite in the Offroad community. Used in a variety of GM truck applications (both gasoline & diesel), the SM 465 is rugged, heavy duty, has a granny low 1st gear, and is simple in design. Replacement and upgraded parts of the transmission are widely available due to its popularity and availability. Like all 4 speed transmissions used in diesel applications, the SM 465 was replaced in favor of a 5 speed gearbox.

 

SM 465 shift pattern SM 465 manual transmission image

 

Related Transmission Specs:

NV4500 NV5600
Getrag 5 Speed T-19 Transmission