When did GM stop using the 4L80E?
GM 4L80-E transmission
| 4L80-E/4L85-E | |
|---|---|
| Overview | |
| Manufacturer | General Motors |
| Production | 1991–2013 |
| Body and chassis |
What’s better 4L60E or 4L80E?
Without a doubt the 4L80E is the more powerful of the two transmissions. Vehicles with powerful engines, such as big trucks for towing or high speed cars for racing, require a 4L80E rather than a 4L60E as the power of the engine is likely to break smaller, less powerful transmissions.
When did the GM 4L80E transmission come out?
Despite its name, the 4L80E is not an upgrade to its GM counterparts. Introduced alongside the original 4L60 in the early 1990’s the 4L80E was designed for large trucks and is designed as a heavy duty unit, rather than a transmission for smaller cars or even some pickups.
Why do I have bad shifting on my 4L80E?
In addition to erratic shifting, the trans control program will default to backup shifting mode if you drive it long enough with this bad sensor, and as a result line pressure through the valve body will be boosted to maximum value, creating harsh shifting.
What kind of torque converter does GM 4L80 have?
The torque converter is a fluid turbine drive and like those on its predecessor transmissions; the TH350C, 700R4, and 4L60, the 4L80 features a lock-up pressure plate for direct mechanically coupled driving from the engine crank. The 4L80 features a 310 mm torque converter. As to length, this transmission is 26-1/4″ long.
Is the GM 700R4 a heavy duty transmission?
The 700R4 was a pretty tough transmission, but not quite in the class of the TH400. GM needed a heavy-duty automatic overdrive. GM used as many TH400 parts and designs as possible in the 4L80E, but the added overdrive gear would require an extra gearset and slightly longer (~1-1/2″) case.