A short excerpt from Hot Rod Garage discussing the Gearstar 4L80E Performance Transmission. Special thanks to the guys at Hot Rod Garage!!! GM 4L80E Performance Transmission Level 4 $5,995.00 Horse Power: 800 (Up to 700 ft-lbs Torque).
- The stock 6L80E hasn't exactly earned itself a good reputation. Until now, swapping in a built 4L60E or 4L80E were your only options if you wanted to make big power with an automatic overdrive that wouldn't scatter all over the track, but Gearstar is changing all that with their new built 6L80E.
- Typical Friday at Gearstar. We are blessed with the best talent in the industry, including 3 young, very talented techs. Tyler, Robert, both Universal Technical Institute Graduates. 4L80E Level 4 Operational Test For Customer, Gearstar Performance Transmissions. 323 views December 27, 2020.
| 4L80-E/4L85-E | |
|---|---|
| Overview | |
| Manufacturer | General Motors |
| Production | 1991–2013 |
| Body and chassis | |
| Class | 4-speed longitudinalautomatic transmission |
| Chronology | |
| Predecessor | Turbo-Hydramatic 3L80 |
| Successor | 6L80/6L90 |
The 4L80-E (and similar 4L85-E) was a series of heavy-duty automatic transmissions from General Motors designed for longitudinal engine configurations. The 4L80-E was heavily based on the Turbo-Hydramatic 400 first produced in October 1963, adding electronic controls and an overdriven fourth gear. 4L80-Es were optioned only in Chevrolet/GMC pickups, Suburban 2500s, vans, and commercial vehicles, and the Hummer H1. It was also adopted by Rolls-Royce in 1991 and modified after extensive testing,[1] and used initially in the Bentley Continental R, and subsequently other Rolls-Royce and Bentley vehicles. The 4L80E and 4L85E were 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 |
4L80-E[edit]
Sky go subscription. The 4L80-E (RPO MT1) is rated to handle engines with up to 440 ft·lbf (597 N·m) of torque.[2] The 4L80-E is rated to max GVWR of 18,000 (Axle and vehicle dependent)[3]
The 4L80-E uses 2 shift solenoids, initially called Shift Solenoid A & Shift Solenoid B, later changed to comply with OBD II (On Board Diagnostics revision 2) regulations to 1-2 Shift Solenoid & 2-3 Shift solenoid. By activating and deactivating the solenoids in a predetermined pattern by the PCM, 4 distinct gear ratios can be achieved. The shift solenoid pattern, also sometimes referred to as solenoid firing order, is as follows;
Gearstar 4l80e Level 4
Shift Solenoid Pattern[edit]
| 1-2 Solenoid | 2-3 Solenoid | |
| 1st Gear | On | Off |
| 2nd Gear | Off | Off |
| 3rd Gear | Off | On |
| 4th Gear | On | On |
No power results in 2nd Gear as 'Limp home mode'.
Gearstar 4l80e
Applications[edit]
- 1991–2013 Chevrolet C/K/Chevrolet Silverado/GMC Sierra 2500 & 3500
- 1991–2013 Chevrolet/GMC Suburban/GMC Yukon XL 2500 & 3500
- 1991–2009 Chevrolet Van/Chevrolet Express/GMC Savana 2500 & 3500
- 2002–2006 Chevrolet Avalanche 2500 General Motors LS with L18 V8 only
- 1992-2006 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
- 1999–2006 Bentley Arnage Red Label / Bentley Arnage R/RL/T
- 1993–1996 Jaguar XJS
- 1994–1997 Jaguar XJR
- 1993–1997 Jaguar XJ12 / Daimler Double Six
- 1996–1999 Aston Martin DB7
- 2000-2006 Chevrolet HD trucks with L18 V8
4L85-E[edit]
The 4L85-E (RPO MN8) is rated to handle vehicles with up to 690 ft·lbf (935 N·m) of torque.[4] The 4L85E is rated to handle vehicles with a GVWR of up to 18,000 lbs (dependent on axle ratio and vehicle)[5]
Applications:
- Chevrolet Avalanche8.1 Vortec only.
- Chevrolet Suburban 8.1 Vortec only.
- GMC Yukon XL 8.1 Vortec only.
- Chevrolet Express with Duramax Diesel or 8.1 Vortec 2500 & 3500 only.
- GMC Savana with Duramax Diesel or 8.1 Vortec only.
See also[edit]
References[edit]
- ^Adcock, Ian (1992). Bentley Continental R. London: Osprey Publishing. p. 113. ISBN185532 260 9.
- ^'Archived copy'. Archived from the original on 2013-12-22. Retrieved December 22, 2013.CS1 maint: discouraged parameter (link) CS1 maint: archived copy as title (link)
- ^GM Powertrain. '07 Hydramatic 4L series'. General Motors. Retrieved January 5, 2014.CS1 maint: discouraged parameter (link)
- ^https://www.chevrolet.com/performance/transmissions/supermatic-4l85-e
- ^GM powertrain. '07 Hydramatic 4L Series Specs'. General Motors. Retrieved January 5, 2014.CS1 maint: discouraged parameter (link)
Comments are closed.