Ultimate Guide to the 4L80E Transmission - Gearstar
https://gearstar.com/ultimate-guide-to-the-4l80e-transmission
webThe 4L80E transmission features a large 32 spline output shaft – much like the TH400 transmission – in the numerous 2WD and 4WD applications. The 4L80E features a die-cast aluminum case, just like most other GM automatics. However, the 4L80E never featured a removable bellhousing, unlike the 4L60E automatic transmission.
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