GM 4T80 transmission

4T80-E
A Hydra-Matic 4T80 transmission at the Ypsilanti Automotive Heritage Museum
Overview
ManufacturerGeneral Motors
Production1993–2011
Body and chassis
Class4-speed transverse automatic transmission
Chronology
PredecessorTurbo-Hydramatic 125
Successor6T70

The 4T80E is a series of front wheel drive fully automatic transmissions from General Motors. Designed for transverse engine configurations, the series includes 4 gear bearing overdrive [1][2] 2 electronic shift solenoids, and electronic force motor to control line pressure.[3]

The 4Txx family is an evolution of the original Turbo-Hydramatic 125 transverse automatic introduced in the 1980 model year "X" body.

The 4T80-E transmission is electronically controlled and features an automatic overdrive transaxle with an electronically controlled torque converter clutch. The 4T80 originally used a viscous clutch, but this was changed in 2005 to ECCC.[1][4][2][3]

The 4T80 is built at Willow Run Transmission in Ypsilanti, Michigan.

  1. ^ a b "GM/Chevrolet Transmission Parts".
  2. ^ a b https://atoc.ru/uploads/manual/5fb79976f29ee.pdf [bare URL PDF]
  3. ^ a b "4T40-E/4T45-E, 4T80-E, & 6-speed Auto transmission info". www.gmtuners.com. Retrieved 2024-06-03.
  4. ^ "4T80-E TRANSMISSION for 500HP 3.6l VVT ???". Pennock's Fiero Forum. Retrieved 2024-06-03.