97 T56 to 4L60e Question
97 T56 to 4L60e Question 
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Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
There are dozens of threads on the subject, but here is one:
https://ls1tech.com/forums/automatic...wap-4l60e.html
Repeating my post in that thread...
You will need:
Trans
Converter
Flexplate
Floor shifter
Trans mount
Mods to the wiring harness for the 13 lines to the trans
The PCM needs to be flashed for the 4l60E version
Not sure but possibly different length drive shaft
Just my opinion, but I would suggest selling it and buying another one with an Automatic. Probably $2000+ in parts plus labor and your car will not be worth any more than it was. There is a strong demand for manual transmission cars.
https://ls1tech.com/forums/automatic...wap-4l60e.html
Repeating my post in that thread...
You will need:
Trans
Converter
Flexplate
Floor shifter
Trans mount
Mods to the wiring harness for the 13 lines to the trans
The PCM needs to be flashed for the 4l60E version
Not sure but possibly different length drive shaft
Just my opinion, but I would suggest selling it and buying another one with an Automatic. Probably $2000+ in parts plus labor and your car will not be worth any more than it was. There is a strong demand for manual transmission cars.
