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Old 10-09-2012, 10:47 AM   #13 (permalink)
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Actually, this is not a lock up torque converter. It is one of the standard torque converters with a given torque converter vane angle. What the switchable torque converter does is simply switch from a mid-angled torque vane to one that goes from min to max torque vane angle. There is not change from a non-lockup torque converter. Thus you can dash select from a higher rpm for one torque value to a lower rpm for a different torque value. Thus it functions like a half overdrive reducing rpms for highway use and higher rpms for more torque when starting out. Not a huge difference, but it might help reduce mileage.
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