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4l80e swap driveshaft length

Shortbed454

New Member
Joined
Aug 19, 2021
Messages
1
So Im needing a question answered from someone who has actually done the 4l80e swap in their 4wd.
I have a 2007 avalanche 4wd that I installed a turbo on a few months ago and like I expected, the transmission doesn't start happy for very long. I poop the bed the other day. So I decided it was time for a upgrade. I have everything I will need for the swap ordered and on the way. With the exception of the drive shafts. I would really like to have them made and ready to install when I swap out the transmission.
For anyone that has actually done this swap on a 4wd avalanche, can you tell me what the length of your driveshafts need to be? I'm sticking with the autotrac transfer case that was behind the 4l60e and just swapping the input shaft. So in theory I should just have to subtract the case length difference between the 2 transmissions to get my rear driveshaft length. But I would like to be 100% sure.
Hopefully someone here has done this swap and can lend a hand. If not, I will just have to wait a couple weeks until I can install it and take some measurements, then way to have some made.
Thanks in advance.
 
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