This is mainly because of larger internals inside the transmissions. Max torqueĭue to the size of the transmissions, there is also a large difference between the durability of these transmissions when it comes to performance. You can see the pictures of the gasket in the specification above. The 4L60e has a rectangular pan & gasket of 16 bolts and the 4L80e has a more oval-shaped transmission pan with 17 bolts. This is a good way to identify if you have a 4L60e or a 4L80e transmission in your car. If you are looking under the transmission for the transmission fluid pan, you will realise that there is a big difference between the transmissions. You can normally compensate for the new gear ratio with another rear axle differential, so this is not always a big problem, but it’s good to know about. This is important to keep in mind if you are swapping between any of these transmissions. For example, on the first gear, the 4L60e has a gear ratio of 3.059:1 while the 4L80e has a gear ratio of 2.48:1. Gear ratiosĪnother big difference between these transmissions that is important to think about if you are going to swap them, is the gear ratios. Just with these numbers, you can probably calculate that there is a big difference in size and weight between these transmissions. The 4L60E has a weight of 150 lbs without fluid and a length of 23.5″, while the 4L80e has a weight of 236 lbs and a length of 26.4″. The 4L80e is much larger and heavier than the 4L60E. The size & weightĪ big difference is the size & the weight between the 4L60E and the 4L80e transmission.
Remember that these are the main differences and you can find other small differences if you carry out more in-depth research. Here are some more differences between these transmissions. There are also different gear ratios and the 4L80E can handle much more torque. The most significant difference between the 4L60E vs 4L80E transmission is the weight & size. Even if these transmissions look pretty much the same in pictures, there are a lot of things that are different between these transmissions.
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