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Old 07-03-2012, 10:16 PM   #1
coloeb's Avatar
Drives: 2012 2LT/RS 6L50 automatic TF-3
Join Date: Apr 2012
Location: Natchez, Ms.
Posts: 104
2012 V-6 Automatic Transmission information

I have been searching all over for info on my transmission. I came across this and was thinking it might be useful for those modding for more power.

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6L45/6L50ManufacturerGeneral MotorsProduction2006–Predecessor4L60-E/4L65-E
5L40-E/5L50Class6-speed longitudinal automatic transmission
The 6L50 (and similar 6L45) is a 6-speed longitudinally-mounted automatic transmission produced by General Motors. It is very similar in design to the larger 6L80/6L90, and is produced at the GM Powertrain plant in Strasbourg, France. It features clutch to clutch shifting, eliminating the bands used on older transmission designs. The 6L50 debuted for the 2007 model year on the V8-powered versions of the Cadillac STS sedan and Cadillac SRX crossover, and replaces the 5L40-E and 5L50 in GM's lineup. The 6L45 version was primarily dedicated to BMW applications, either RWD or AWD.
The 6L50 is adaptable to rear-wheel drive and all-wheel drive applications. It can accommodate engines with up to 332 ftlbf (450 Nm) of torque, and vehicles with a GVWR of 5,000 lb (2,268 kg).

Gear ratios:

  • 2007 – 2010 : BMW X3 - 3.0si / 2.5si / 3.0i
  • 2007 – ... : BMW 3 series - 330(x)i / 328(x)i / 325(x)i / 323i / 320i / 318i / 316i
  • 2007 – ... : BMW 1 series - 130i / 128i / 125i / 120i / 118i / 116i
  • 2009 – ... : BMW X1 - 2.8i xDrive / 2.5i xDrive / 1.8i sDrive
Its better to burn out , than to fade away.

Last edited by coloeb; 07-04-2012 at 12:18 AM.
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