THM250 Transmission parts, repair guidelines, problems, manuals
Transmission general data
| Number of gears | Transmission Type | Drive | ATF (full capacity) L | ATF (change) L | ATF type |
|---|---|---|---|---|---|
| 3 | AT | RWD | 9,5 | 5,6 | Dexron II |
The automatic gearbox THM250 is based on the
THM350. This gearbox was released in 1974 and was applied in Chevrolet cars.
The THM250 was developed and designed by GM as a part of Turbo Hydra-Matic family
of automatic gearboxes. When taking into consideration the internal structure
of the gearbox, the THM250 is very similar to THM350, apart from the
intermediate clutch package with a band adjuster.
What are you looking for?
Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor
Generally, the THM250 was attached to small displacement engines. In 1976 this gearbox was taken out of production and was replaced by the light-duty THM200 transmission. However, the THM250 reemerged in 1979 as the THM250-C as a result of numerous issues withTHM200/200C. The 250C version had a reduced weight thanks to the use of a central gear shell applied the THM350, but with three holes to decrease flywheel mass and the low/reverse piston with eight notches.
Instruction manuals and useful links Suggest your link
| Link type | Source | Description |
|---|---|---|
| oldcarmanualproject.com | Repair manual THM250 | |
| drive.google.com | THM 350C Repair manual |