i ran a stocker out of a diesel truck. i was told they stall at a lower rpm then gas engine turbo 400 torque convertors. Worked great behind my stock 5.3
brand PTC i run around a 2800 stall but it all depends on the what all is done to the motor. i just called kenny ford at ptc told him what i had and was doing and he built the comverter for my motor.