here is one guys comments on the 6L80:

"Being I've spent a good part of my life working on and modifying transmissions I feel I can say this with some very good certainty. This new 6 speed is definitely based on or built in conjuction with Borg-Warner of Europe. All the elements of the B-W staples that you'll find in almost any year Mercedes/BMW and some Volvo's are all there. The dead giveaway's are the 3 bolt yoke, the torque converter backing plate, the base rail around the pan and most important is the limited view of the integral solenoid pack thats appears to be a separate and secondary valve body unto itself (closely macthing current B-W's). What does this all mean, well after owning transmission franchises for almost 17 years now before I went onto racing full time, less than 1% of my business was around any Borg-Warner units, they are a great design and they just take a beating. I would even venture to say that when it comes to this trans the days of shift kits and big servo's are done, other than racing clutches and high stall torque converters all performance enhancements would be made through programming. I cant wait to see what the aftermarket comes up with on a stand alone controller for this monster-RPM Dragracing"

 

more comments:

"Keep in mind that the 6L80 is a Clutch to Clutch transmission, and not a step gear free-wheeler like a 4L80E...It is FAR more difficult to calibrate, as you have to control the oncoming and offgoing clutches, and timing is critical. The 6L80 is smaller than 4L80, due to the C2C design, which results in smaller components, but does have a lot more solenoids for pressure control....I am fortunate enough to have spent alot of time with the 6L80 in a variety of applications, and it is awesome.....-BAD6SPD"

 

so the 4L80e swaps very well may be replaced with 6L80e swaps? Would definetly be nice to have a 6-speed auto, with that push button manual control on the shift column.

 

It sounds like it's the electronics that make this even possible at all. Imagine what it would feel like if those shifts were not timed PERFECTLY! It would either bog or flare up during the shift. I wonder how many reluctor rings and sensors there are in it...

That must be some very trick software.

 

Can you link to the source of these comments please Devin?

 

more info, although it might mean more complexities

"The transmission is equipped with DSC(Driver Shift Control) which is a "manual" mode, and utilizes rocker switches on the steering the driver may select upshifts or downshifts An upshift is requested by pushing either + button. A downshift is requested by pulling either + button rearward toward the driver."

"Technological sophistication is exemplified by two electronically controlled automatic modes, Drive and Sport; plus manual Paddle Shift. The Drive mode follows a specific shift schedule of predetermined shift points, while the Sport mode enables Performance Algorithm Shifting (PAS). PAS modifies shift patterns when performance driving is recognized by the controller. The Drive mode optimizes shifts for smoothness, while the Sport mode enables firmer shifts for better performance. With the Paddle Shift mode, gear changes are made with manual control paddles located on the steering wheel."

 

i believe it was designed because people were upset with the drastic downshift while going up a steep hill on teh 4 speeds, or towing something. so they put more gears. it must be pretty efficent, making the 6000lb 2007 escalade run 14's,and the 07 denali right behind.

 

were they tested already?

 

so what ever happened to this?


edit: never mind.....did another search....

 

so far a no go