GM 4L80-E transmission

Infobox Automobile
name=4L80-E/4L85-E
production=1991–
manufacturer=General Motors
class=4-speed longitudinal automatic transmission
predecessor=Turbo-Hydramatic
successor=6L80/6L90
similar=C-6/E4OD
A-500/A-518The 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, originally produced in 1965. 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:

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:
* 1994– Chevrolet Blazer V8
* 1995– Chevrolet C/K/Chevrolet Silverado/GMC Sierra V8
* 1993– Chevrolet Suburban/GMC Yukon XL
* 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

4L85-E

The "MN8" 4L85-E is able to handle vehicles up to 8500 lb (3856 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 XL
* Chevrolet Express with Duramax Diesel
* GMC Savanna with Duramax Diesel

ee also

* List of GM transmissions