Converter. Trans brake questions.

There are converters out there that don't slip as much as they used to . You still need as much of a cooler as you can . Tranny breaks can be fineky on the street . For every second the tranny break is applied the tranny temp goes up 8-10 deg . In racing the tranny break is on only after the car is staged . Keep that in mind . I have heard of them activating on the road and destroying itself but I can't verify it .