Pan & Pan Gasket This is a good way to identify if you have a 4L60e or a 4L80e transmission in your car. The 4L60e have a rectangular pan & gasket of 16 bolts and the 4L80e have a more oval-shaped transmission pan with 17 bolts. You can see the pictures of the gasket in the specification above.Click to see full answer. Hereof, how do I know if I have a 4l80e?4L80e transmissions are pretty easy to identify. They have 2 speed sensors on the driver side of the transmission. The early units have no top bolt hole in the bellhousing so you loose 2 bolt locations. The early units also have the cooler lines together near the front of the bellhousing area. does a 4l80e need a computer? A 4L80E can be made to run without any electronics but it has to be full manual valve body which would get old on a daily driver. People also ask, will a 4l60e and 4l80e interchange? 4l60e to 4l80e swap kit. Swapping from the 4L60E to the 4L80E is not difficult to do in vehicles that were equipped with both transmissions. It’s not the easiest swap to do, and a 4L60E can handle a lot of power on its own.How much HP can a 4l80e handle?In short, Performance Automatic yields a 4L80E engineered to handle 700+ horsepower and comparable torque.