Come on none of the other hard core Mustang or Ford guys could answer this question ?

A stall and torque converter are the same things. Its like saying you have a V8 or a eight cylinder.

A torque converter basically is equal to revving a manual car to a certain RPM range and then letting the clutch go slowly. The torque converter just does it more smoothly. Lets say you have a 3000rpm stall converter that means the converter will not lock-up until 3000 rpms. The trick to a torque converter is to try to match the cars power band with the converters lock-up. Then you have terms like flash stall and foot brake: stall.

Of the two measurements of stall Flash Stall is the most accurate. Foot-Brake stall is dependant upon too many variables. (type of braking system disc or drum brakes how well adjusted the brake system is ring and pinion ratios effect foot-brake stall more dramatically idle characteristics of engine cam installation for low end torque as needed by automatic transmission.)

Flash Stall can be determined a couple of different ways:

With the vehicle sitting still and idling in low gear apply full throttle. As the vehicle begins its motion forward notice the RPM hand on the tachometer. That is your Flash Stall

For as simple as the converters look they do some pretty complicated work. So I do not know what exactly you are looking for.

Hope that helps if you have a more specific question let me know.