There are no customization options on the re-convergence of a stack.  It is basically kicking of a reboot of the OS on the box.
I've create a stack between two Dell PowerConnect switches 8164.But i want to know if i could modify the times it takes to converge the converge time between them, i mean...i remove all the cables of stacking (so no conection between switches), and then connect them...it takes something between 3-5 minutes for full convergence.Is there a customization here?Regards! 
How to modify the time that stacks convergence on Dell PowerConnect 8164