just found a 2007 4l80 out of a classic 2500HD (running and driving truck) with 4 digit mileage that I'm picking up Friday if all goes well. It's 1000 bucks but I get everything, flywheel, converter, sensors, yoke, shift linkage, dipstick and tube..... anything else I need to ask for? haha

 

Yeah....make sure you get the shift cable bracket. It's different to the 60E bracket.

 

You didn't list the TC cover.

 

good call guys, anything else.... man I'm excited.

 

I am looking to do this soon just getting all of the parts together.
One question I have is with the cross member, can we use a cross member out of a new body style truck that has the 4l80e it insted of having to fab one up ? I would think that it would be a direct bolt on .

 

the new body style never had a 4l80e

 

So what tranny is in the new 2500hds ?

 

6l90e

The 4l80e swap doesn't work well in the NNBS from what I've seen. A member here did it and he's still got electrical problems I think.

 

Hummm is this not what this post is about ???
Converting your 4l60/65/e to a 4l80e

 

Tranny was a bust, low miles late model unit with a bent output shaft from the drivetrain being shoved back from a head on collision, the slip yoke was shoved into the tailshaft and they couldn't get it off. think they cracked the case as well... oh well, the search continues.