Items marked by the "THM250" tag:
Articles
Transmission general data
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.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type3ATRWD9,55,6Dexron II
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 linksLink typeSourceDescriptionpdfoldcarmanualproject.comRepair manual THM250