iamkeniff

iTrader: (16)

HAMMER is installing a 6L80e with his 4L70e transfer case. All he had to do was swap the input shaft on the transfer case *i THINK*

Three6GMC

iTrader: (11)

Ok I currently have the 6l80 with the autotrac transfer case but since I'm going up in power and going with the 6l90 will my transfer case still work on the 6l90 or will i have to get a new one for it?

mitchellmade

iTrader: (13)

Is the 6l80e in good shape, I have a 6l90

pewterliftedz

iTrader: (4)

no it wont eereck.. the 90e has a 34 spline output


keep us updated on this niff. I definately want todo a 6 speed swap eventually.

bigbegum

iTrader: (4)

Good thread, thanks for the info. Anyone have any new information on transfer case swaps?

04BlackGmc

iTrader: (18)

Bump!

I have a 2008 Avalanche that had some work done down south.
Long story short someone did a 6L80E swap and manual transfer case.

Customer is wanting some sort of option for a electronically controlled transfer case.

What are my options?

blownescalade62

Put in a Auto-Trac transfer case 2009 up and ad the switch

Seanmcnulty06

i know this is really old, but worth a shot. I am changing from a 6l80 to a 6l90. I have everything figured out and ready, except for I had to change transfer cases and the new one only has 2 plugs and old one has 3. Do you know anything about this?
Thanks in advance!