WHAT IS BRAKE STALL?

This is the stall speed most of us are familiar with. If you’ve ever crammed the brake pedal to the floor, dropped the selector into Drive and held the accelerator down until the engine could no longer build rpm without moving the truck forward, you’ve tested your converter’s brake stall. While many converters are labeled for having a certain stall speed, it’s important to know that there is no set stall for any one converter. The same converter that stalls at 2,000 rpm on a stock truck could stall at 2,300 rpm on another one where the engine is making more torque.