GM 6L80 (A6) transmission

[HSV-GTS-300]

The 6L80 (and similar 6L90) is a 6-speed automatic transmission built by General Motors at their Willow Run Transmission plant, in Ypsilanti, MI. It was introduced in late 2005, and is very similar in design to the smaller 6L45/6L50, produced at GM Powertrain in Strasbourg, France. In February 2006, GM announced that they would invest $500 million to expand the Toledo Transmission plant in Toledo, Ohio to produce the 6L80 in 2008.

Gear ratios:

1.......... 2.......3......4........5.....6......R
4.027 2.364 1.532 1.152 0.852 0.667 3.064

Applications:

2006 Cadillac XLR-V
2006 Chevrolet Corvette
2006 Holden VE Commodore
2006 Holden WM Statesman
2006 Holden WM Caprice
2007 Cadillac STS
2007 Cadillac Escalade
2007 GMC Yukon Denali
2008 Pontiac G8
2009 Cadillac CTS V-Series

More details and specs here :

http://media.gm.com/servlet/GatewayServlet?target=http://image.emerald.gm.com/gmnews/viewmonthlyreleasedetail.do?domain=39&docid=23551

[ramairetransam]

i wish they would make 6th .5 like in the t56 .

[HSV-GTS-300]

Originally posted by ramairetransam
i wish they would make 6th .5 like in the t56 .

In effect they have already gone very tall on the final gearing.
0.667 + 2.92 rear ratio + 18 or 19" tires

[jmd]

Any detail on the size of this trans.?

In regard to swap potential and in directly comparison to the 4L60-E, specifically.

[HSV-GTS-300]

Sorry I don't have the 6L80 dimensions. As far as swap potental older PCM's communicating with the integrated 32-bit electro-hydraulic controller could be a huge hurdle.

6L80 Cutaway Drawing

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/6L80.jpg




4L60E dimensions
http://www.hotrodlane.cc/PDFFILES/4l60etransmeasurments.pdf

[Speedfreak]

I thought I read it had its own standalone pcm?

[HSV-GTS-300]

A new, 32-bit electro-hydraulic control module optimizes transmission performance according to a variety of vehicle inputs, while also enabling features including tow/haul mode, auto grade braking and manual range selection. The controller is located entirely within the transmission and operates while immersed in transmission fluid. Locating the controller internally shields the controller from outside elements.

"it's the CAN bus that changes everything. The trans will only talk to the new 58X Gen 4 engines/controllers."

[Big Slick]

doesn't gm sell an independent trans controller that takes input directly from the engine's sensors? i know it's expensive, but so is a 4l80e swap lol