2800+ stall conv

The stall speed is dependent on the engine torque input to the converter. I have a converter on the shelf, that is 2800 rpm stall at 250 lb/ft torque input.
The converter in my race car would stall at 3200 rpm, behind my 170 cid engine. The same converter would stall at 4,000 rpm, behind my 225 cid engine. More torque from the 225 engine. I'll bet if you put this converter behind a 408 stroker, it would be over 5,000 rpm stall.