I want to turn my engine by hand, because I need to index the distributor. Many times I've seen people write that they turn the engine with the harmonic balancer, but mine has no bolt installed. Pepboys has one available, but I don't know if the crank is threaded for it. I read that the 283 never used a bolt, it was pressed on and held with a Woodruff key, so I don't know if there is thread for one in the crank snout. Even if it doesn't need a bolt, if there is thread for it is it ok to get one to turn the engine, any danger of damaging anything? If it's safe, should I leave the bolt in there and tighten it down, as a modification? If the bolt won't work, any ideas on how to turn the engine? If I turn the fan, it just slips in the belt. I suppose bumping the engine with the starter will work eventually, but that can take forever. How about if I take the pulley off of the balancer, install a couple of the bolts about halfway into the balancer, and wedge a screwdriver between them? Would that work?