Too much talk about stall; not enough about coupling IMHO. I like a converter that multiplies proper tq off the line to get the load up fast. Then; 50 ft out of the hole I want it to stop and begin coupling. ( getting the power to the wheels asap.)
There are converters that are tight off the line because of turbine and stator mods that stay tight and are dead through out the power band. That is bad unless you have a 12V Cummins. They have such a small power widow ( rpm wise ). Our trucks need coupling ( V8 ) which means the converter needs to get more efficient with rpm rise.
That think is why my TCC doesn't lock to 3rd gear under a load.. And that stock Tc as well.. It blows the 1,2 and 1/2 of third at 50% throttle on a ~400hp truck..
Plan and simple the stall/coupling/etc/whatever you want to call it.... Stock is has tooo high of a stall...stall is a reference # because tuneing, turbo, gearing weight tires all play a factor in the behavior of the TC..
I spend ~1300.00 on a TC I want to know when are where to expect the Tc to preform stall,couple,etc at!
If sale/mfg can't give a person fictional data on what range a said part preforms at... Find someone that does...
In stop n go traffic juat the ~7500lb trailer I will hit 180°.. With 25,000lb trailer 200-210° in 2-3 stop n goes... Watching first couple seconds of the videos you'd thing I was staging st a drag strip