GM 4T60-E transmission

From Wikipedia, the free encyclopedia

4T60-E/4T65-E
Manufacturer	General Motors
Production	1992–
Predecessor	Turbo-Hydramatic 125
Successor	6T70
Class	4-speed transverse automatic transmission

The 4T60-E (and similar 4T65-E) is a series of automatic transmissions from General Motors. Designed for transverse engine configurations, the series includes 4 forward gears. The 4Txx family is an evolution of the original Turbo-Hydramatic 125 transverse automatic introduced in the late 1970s.

The "-E" transmission is electronically controlled and features an automatic overdrive transaxle with an electronically controlled torque converter clutch.

The 4T65 is built at Warren Transmission in Warren, Michigan.

1 4T60-E
2 4T65-E
- 2.1 4T65E-HD
3 See also

[edit] 4T60-E

Main article: Turbo-Hydramatic 125

The 4T60 was the transitional model from the old Hydramatic (formerly called the 440-T4) to the new electronically-controlled transverse family. Introduced in 1984 on the 1985 C-bodies, it was enhanced with electronic controls to become the 4T60-E in 1991. By the mid-1990s, the 4T60-E was the transmission of choice in nearly every front-wheel drive GM vehicle. A heavy-duty 4T60-E HD was introduced in 1991 for the supercharged GM 3800 engine. The 4T60-E was phased out in favor of the 4T65 beginning in 1997.

Even though the 4T60E is electronically controlled, shift points were not easily customizable prior to the computer standard OBDII and the advent of DHP Tuning (http://65.109.52.43/PowrTuner.htm).

The 4T60-E featured a 245 mm torque converter with varying stall rpm's depending on year and application. (For example a '95 Beretta features a 1650rpm stall converter as opposed to '99 Century converter with a stall of 2095rpm.)

Applications:

4T60-E
- 1991-1996 Oldsmobile Cutlass Ciera/Oldsmobile Ciera V6 2.2/3100/3300 L
- 1994–1996 Chevrolet Beretta/Corsica V6 3.1 L
- 1992–1996 Chevrolet Lumina APV V6 3.4 L/3.8 L
- 1996 Buick Park Avenue V6 3.8 L
- 1993–1996 Chevrolet Lumina/Monte Carlo V6 3.1 L/3.4 L
- 1997–1999 Chevrolet Lumina/Monte Carlo V6 3.1 L
- 1997– Chevrolet Malibu V6 3.1 L Uses a 4T40-E
- 1997–1998 Chevrolet Venture V6 3.4 L
- 1992-1997 Pontiac Bonneville 3800 V6
- 1995-1998 Pontiac Grand Am 2.4 L
- 199x-1999 Buick Century
- 1991-1992 Oldsmobile Toronado/Trofeo 3800 V6
- 1991-1993 Cadillac DeVille 4.9L V8

[edit] 4T65-E

The 4T65-E was introduced to replace the 4T60-E in 1997. The 4T65-E included a larger 258 mm torque converter and many other changes to improve reliability. It is able to handle vehicles up to 6500 lb (2948 kg) GVWR with up to 280 ft·lbf (380 N·m) of torque. A number of final drive ratios are available, with many distinct models. Starting in mid year 2000 models, all 4T65-E models received an upgraded valve body. Starting in 2003 the internal electronics were changed, and ratcheting sprags for input and 3rd gear were added.

Models: