im having trouble undoing the crank bolt from a block that is on an engine stand. there is no tranny or head on the block.
i have tried using a electric rattle gun which just spins the rotating assembly. what are some ways of holding the rotating assembly in place so it dosnt move?
i have tried holding the pulley with my hand but i still cant get it undone with the gun going full ball for about 30-40sec.



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