torque converter lockup schedule

[98LSC32V]

What mph should I have my torque converter lock up at? I'm getting my chip reburned, any input?

 

[torquemonkey]

Depends, I have read that some fellas have TC lock @55mph. As I understand mechanically locking the TC is good for gas mileage and transmitting more engine power to rear wheel power. Lincoln put lock up at 34 mph for some reason.