Just watched an informative video on some 4l60/65/70 basics that covers installation, coolers, flex plate, converter spacing, etc from Performabuilt. Ryan, the guy in the video, is the one who figured out my issue with breaking parts including the output shaft due to my use of RTV on the pan gasket which caused the servos to not release and he talked to me on the phone for quite awhile after my second failure. These guys are the best in the industry and in fact covered my rebuild under warranty even though it was a year past it AND it was my fault. It’s an hour long but there’s some good info including why the dipstick is wrong on almost every one of these transmissions and you might be running 2 quarts low and don’t even know it, plus how to mark it correctly the next time you have the pan off to replace the filter.
https://fb.watch/42QfVsqNTm/