Im going for the swap, couple of ????'s
1. Will my TCI3500 from my 4L60e work with the 4L80e? Ive got the stock LS1 flywheel on the 408ci not the 6L one.
2. When you have to send the PCM to have it fixed, what exactly are they changing?
3. Just out of curiousity, what would a stock 4L80e hold power wise? Without having to worry about it.

