Originally Posted by btoler
In what situations do you take the overdrive off?
I turn OD off when I don't want to be in Overdrive, AND when I don't want the Torque Converter to unlock.
The OD off switch not only locks out OD, but it also prevents TC unlock in 2nd and 3rd (it locks up as soon as possible in the lower gears).
I end up using the OD OFF button mostly around town under 50mph.
I'm geared properly with 4.88s for 33s.