[Transmission] Master GM Transmission List

[4x4 Mecca]

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Transmission List

Model	Years	Gears	Application	Source	Last Edited By
700r4	1982-1993 (?)	First - 3.059 Second - 1.625 Third - 1.000 Fourth - 0.696 Reverse - 2.294	All kinds of GM's	Wikipedia	4x4 Mecca
SM465	1973-1987	4 forward, 1 reverse. Granny Low 6:58:1 2nd Gear: 3:58:1 3rd Gear: 1:57:1 4th Gear: 1:1	1/2, 3/4 and 1 ton Chevy	www.high-impact.com www.tlc4x4.com	MuddinManny
TH400	1964-1991(approximate)	3 forward, 1 reverse 1st Gear: 2.48:1 2nd Gear: 1.48:1 3rd Gear: 1:1	GM, AMC/Jeep	www.tlc4x4.com	MuddinManny
4L60E	early 1990's - 1997 (1st Version) 1997 - current (2nd Version)	4 forward gears w/overdrive, 1 reverse 1st Gear: 3.06:1 2nd Gear: 1.62:1 3rd Gear:1:1 with an overdrive of 30% (4th Gear)	GM/Chevy Trucks	www.tlc4x4.com	MuddinManny
4L80E	no dates given	4 forward gears w/overdrive, 1 reverse 1st Gear: 2.482 2nd Gear: 1.482 3rd Gear: 1.1 4th Gear (OD): .75.	GM/Chevy Trucks	www.tlc.com	MuddinManny
TH350	1969-1981	3 forward, 1 reverse 1st Gear: 2.52:1 2nd Gear: 1.52:1 3rd Gear: 1:1.	GM/Chevy 4WD Trucks	www.tlc4x4.com	MuddinManny
TF727	1980-1991 (SJ production ends)	3 forward, 1 reverse 1st Gear: 2.74:1 2nd Gear: 1.54:1 3rd Gear: 1:1	Chrysler/Jeep	www.tciauto.com	MuddinManny
SM420	1947-1968	4 forward, 1 reverse 1st Gear: 7.05:1 2nd Gear: 3.57:1 3rd Gear: 1.7:1 4th Gear: 1:1.	All GM trucks	www.tlc4x4.com	MuddinManny
NP435	1993-1994	5 forward, 1 reverse 1st Gear: 6.34:1 2nd Gear: 3.44:1 3rd Gear: 1.71:1 4th Gear: 1:1 and a 27% overdrive (5th gear)	GM/Chevy (sparingly)	www.tlc4x4.com	MuddinManny
NV4500	1995	5 forward, 1 reverse 1st Gear: 5.61:1 2nd Gear: 3.04:1 3rd Gear: 1.67:1 4th Gear: 1:1 ratio, and a 27% overdrive (5th gear)	GM/Chevy	www.tlc4x4.com	MuddinManny
NV4500	1996-2001	same gears, however there was a change in the bellhousing to tranny bolt pattern, larger BH index	GM/Chevy	www.tlc4x4.com	MuddinManny
4L60	1990's (New 700R4 reclass)	4 forward gears w/overdrive, 1 reverse 1st Gear: 3.06:1 2nd Gear: 1.62:1 3rd Gear:1:1 with an overdrive of 30% (4th Gear)	GM/Chevy	www.tlc.com	MuddinManny
89MM	late model GM 1/2 Tons	Light Duty 4 forward, 1 reverse 1st Gear: 4:1 25% overdrive	GM 1/2 Tons	www.tlc.com	MuddinManny