Im getting a good deal for an LS motor with a spun bearing. Would this be inexpensive to fix? He said the motor was still running when they pulled it out. What would I need to replace?

 

depending on the extent of the spun bearing ... if oyu need to cut the crank journals down, cant go lower than the clearance of the new rod or the bore on each main (depending which bearings spun - typically the rods spin first) vs. new cut journal or you'd have to get a new crank or get your rods or main caps milled then align-bored ...

greg

 

Main or rod spun? Makes a big difference in cost to fix. Spun main and I would pass on the project.
BTW motors don't run very long if they really have a spun bearing.