Torque Converter: Description and Operation

lock-up Torque Converter

The lock-up torque converter is Standard on all vehicles except 225 CID. engines.
The lock-up mode is activated only in direct drive and above a minimum preset vehicle speed. At wider throttle openings, where the 2-3 upshift occurs above the minimum lock-up speed, the lock-up shift will occur immediately after the 2-3 upshift.
Lock-up and non lock-up torque converters and transmissions are not intermixable.