Not sure this will work with a regular belt pulley, but on my 3.2 liter with a serpentine belt I used a pipe wrench to hold the crank while removing and tightening the crank bolt. Used some dense ?ö to 5/16ö fiberboard to protect the belt side of the pulley from the pipe wrench teeth, I slipped the end of the pipe wrench movable jaw inside the pulley. Tightened the wrench down so that the jaws would sort of clamp the outer edge of the pulley, when a little side pressure was applied to the pipe wrench, the pulley wasnÆt going anywhere. I used a chain link corner fence post over the pipe wrench handle for leverage. Perhaps with the belt or belts wrapped around the drive shaft pulley to protect it from the pipe wrench and then the fiberboard on top of the belts and pulley, it could work for you?