General Information

Applications:
E-car ^ Cadillac Eldorado
G-car ^ Oldsmobile Aurora
K-car ^ Cadillac Seville
Ksp-car ^ Cadillac DeVille
^ Concours

Designation: 4T80-E

Type: Four speed front wheel drive, electronically controlled, automatic overdrive transaxle with mechanical or viscous converter clutch.

Engine Range: 4.0 L - 4.6L

Maximum Engine Torque: 300 lb ft (407 Nm)

Maximum Gearbox Torque: 461 lb ft (625 Nm)

Maximum Gross Vehicle Weight: 4750 lb (2150 kg)

Case Material: Die cast aluminum

Converter Size: 265 mm (reference) (Diameter of Torque Converter Turbine)

Transaxle Fluid: DEXRON� III

7-Position Ouadrant: P, R, N, OD, 3, 2, 1

Transfer Design: Two-Axis design, link chain assembly

Assembly Site: Willow Run, Ypsilanti, MI

Transaxle Weight:
Dry - 122 kg (269 lb)
Wet - 134 kg (295 lb)

Gear Ratios:
1st 2.960
2nd 1.626
3rd 1.000
4th 0.681
Rev 2.130


Maximum Shift Speed:
1-2 64OOrpm
2-3 6400 rpm
3-4 6400 rpm

Control Systems:
Shift Pattern - (2) Two-way on/off solenoids
Shift Ouality - Force motor control
Torque Converter - Pulse width modulated solenoid control


Fluid Capacity (Approximate):
Complete Overhaul - 12.O L (12.6 qt)
Dry - 14.2 L (15.0 qt)

Pressure Taps Available: Line Pressure