GM 4L80-E transmission
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| Manufacturer | General Motors |
|---|---|
| Production | 1991– |
| Predecessor | Turbo-Hydramatic |
| Successor | 6L80/6L90 |
| Class | 4-speed longitudinal automatic transmission |
The 4L80-E (and similar 4L85-E) is a series of automatic transmissions from General Motors. Designed for longitudinal engine configurations, the series includes 4 forward gears. It is an evolution of the Turbo-Hydramatic 400, first produced in October, 1963. 4L80-Es have been optioned only in Chevrolet/GMC pickups, vans, and commercial vehicles, and the Hummer H1.
The 4L80 and 4L85 are built at Willow Run Transmission in Ypsilanti, Michigan.
Gear ratios:
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 2.48 | 1.48 | 1.00 | 0.75 | 2.07 |
[edit] 4L80-E
The "MT1" 4L80-E is able to handle vehicles up to 8000 lb (3629 kg) GVWR with up to 440 ft·lbf (597 N·m) of torque. Final drive ratios include 3.42, 3.73, and 4.10.
Applications:
- 1991– Chevrolet C/K/Chevrolet Silverado/GMC Sierra V8
- 1991– Chevrolet Suburban/GMC Yukon
- 1995–2003 Chevrolet Tahoe/GMC Yukon
- 1995– Chevrolet Van/Chevrolet Express/GMC Savana
- 2002–2006 Chevrolet Avalanche V8 8.1L
- Hummer H1
- 1992–1998 Rolls-Royce Silver Spirit/Spur II, III, IV
- 1991–1992 Bentley Eight
- 1991–1997 Bentley Turbo R
- 1991–2002 Bentley Continental R/S/T
- 1999–2002 Bentley Arnage Red Label
- 1993–1996 Jaguar XJS
- 1994–1997 Jaguar XJR
- 1993–1997 Jaguar XJ12 / Daimler Double Six
- 1996–1999 Aston Martin DB7
[edit] 4L85-E
The "MN8" 4L85-E is able to handle vehicles from 7200 to 16,500 lb (3265 - 7483 kg) GVWR with up to 460 ft·lbf (624 N·m) of torque. Final drive ratios include 3.42, 3.73, and 4.10.
Applications:
- Chevrolet Avalanche
- Chevrolet Suburban
- GMC Yukon
- Chevrolet Express with Duramax Diesel
- GMC Savanna with Duramax Diesel
