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Anyone on here rebuilt your own 6L80E transmission? How difficult was it or is it better to just buy one already rebuilt
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If you have a lot of tools, you're patient and can pay close attention to detail you can rebuild one. Just make sure you have a clean working surface and you lay everything out in the order that you taking out like. Second important thing is do not skimp out on the quality of the internal parts like bands and clutches. I can't stress enough on how clean your work area needs to be. Regular dust in the air is not a problem but if somebody takes an air hose and starts spraying the floor of your shop you're going to have a problem. Be very careful with the valve body because there are check balls that go in precise places and you need to make sure those go back exactly where they came out of. In the grand scheme of things the inside of a transmission is not that difficult. And there's not a whole lot of moving Parts in there actually. It's mainly just a hydraulic pump with a bunch fluid channels and few valves that control that . However, if you are not an experienced mechanic with a ton of confidence then don't even try it. If you possess those two gifts there are plenty of YouTube videos to help you along the way if you hit a sticking point.
Getting a good rebuilt transmission is a 4,000- 5,000 endeavor. If you have that kind of money then buy a Gearstar rebuilt trans. They are a really good outfit and all the car repair and build shows on Motortend TV use those exclusively in their mild to semi wild performance vehicles builds. On the 4L80E the stock clutches are what usually go out first and heat is its enemy. So if you do get one rebuilt then I would suggest going with a larger transmission cooler or even a secondary transmission cooler to keep temps down that'll make your transmission last a lot longer. I would even go as far as to replace the transmission pan with an aluminum pan with cooling fins and a drain plug. It's always better to be safe than sorry.
Getting a good rebuilt transmission is a 4,000- 5,000 endeavor. If you have that kind of money then buy a Gearstar rebuilt trans. They are a really good outfit and all the car repair and build shows on Motortend TV use those exclusively in their mild to semi wild performance vehicles builds. On the 4L80E the stock clutches are what usually go out first and heat is its enemy. So if you do get one rebuilt then I would suggest going with a larger transmission cooler or even a secondary transmission cooler to keep temps down that'll make your transmission last a lot longer. I would even go as far as to replace the transmission pan with an aluminum pan with cooling fins and a drain plug. It's always better to be safe than sorry.
