GM 4L80-E 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:

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

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

See also

• List of GM transmissions