Пожалуйста, посмотрите, что значит stock AOD converter в этом контексте!

By torque multiplication, we mean that there is more torque on the turbine shaft than the engine is putting out because the vortex fluid is accelerated more than once. Torque multiplication is obtained at the sacrifice of turbine rotation. Actually, it's no different from the mechanical advantage which your get from gearing down. You gain torque by sacrificing motion.
Torque multiplication takes place anytime the turbine is turning at less than 9/10 impeller speed. At full stall, the stock AOD converter produces about 1.85-to-1 torque multiplication. As the turbine speed increases in relation to the impeller, torque multiplication decreases.

Заранее большое спасибо!