The 4L80E transmission was considered the best in many heavy-duty GM and other high-end luxury vehicles. These luxury vehicles include Rolls Royce, Bentley, and Jaguar, ranging from 1991 – 2013.
The 4L80E automatic transmission is the advanced progeny of TH400 automatic transmission, which was considered legendary. Therefore, it must be noted that although the 4L80e is considered standard in a lot of heavy duty and luxury vehicles, their strength, even in stock form, made them a very sought out candidate for transmission swaps in high-performance trucks and cars that could be even suitable for drag races. More On 4L80E transmission People considered the 4L80E transmission a TH400 with a 25 percent overdrive tacked on. As discussed above, this transmission is extensively used in 34- and 1-ton trucks and larger SUV applications. The specific E means that it uses an electronic ECU control, as the transmission will not function without it. Because of the much more comprehensive and enhanced use of this transmission, it has relatively experienced multiple minor and significant upgrades over the years. Additionally, the incorporation of electronic control and an overdrive tends to add roughly around 50 pounds. Thus, in a nutshell, all the upgrades and improvements that 4L80E experienced focused on performance improvements. The 4L80E transmission features a die-cast aluminum case like all the other GM automatics. Finally, in 1991, 4L80E transmission saw a massive rollout across various engine platforms and immediately succeeded. The Technology Concentrated Around 4L80E Transmission The 4L80E transmission used electronic control with shift maps that the driver selects based on usage, such as towing. The year 2004 saw 4L80E transmission with its own dedicated T42 transmission computer. It also helped receive an improved neutral safety switch and improved transmission line. Therefore, it can be said that the 4L80E transmission has left everyone impressed with its superior outflow in the peak performance range. It is an intelligently designed transmission from GM, which had a terrific record in GM and other conversion situations. Conclusion People who used 4L80E transmissions know the reason why it became the center of the stage. It became a huge success and is still considered reliable in multiple cases.
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