mrvedit

A worn 3/4 clutch is one of the most common problems reported here for the 4L60E. Many members have reported premature 3/4 clutch failures after a rebuild.
Whether you are having your trans rebuilt locally or are doing it yourself, it is good be be well informed about this trouble spot.

Here are some useful threads: (updated 06/28/2021)

https://ls1tech.com/forums/automatic-transmission/1602822-ultimate-4l60e-3-4-clutch.html

https://ls1tech.com/forums/automatic...built-60e.html

https://ls1tech.com/forums/automatic...hes-4l60e.html

https://ls1tech.com/forums/automatic...t-problem.html

In the following thread we reach possible consensus that the Borg Warner "Hi-Energy" frictions are the best choice for frictions in the 3/4 clutch, but MORE Importantly that clutch-friction brand/choice rarely causes 3/4 failure, but rather that leaks in the 3/4 hydraulic circuit is by far the most common reason for early failure on a rebuild.

https://ls1tech.com/forums/automatic...-clutches.html

I am keeping this thread locked, but will update it regularly with links to other related (open) threads. If you want to suggest a thread, PM it to me.

I will soon add some posts to summarize the problems and solutions, being careful to keep my advice in line with the pro builders here (which I am not).