Even if you thread the crankshaft, DO NOT use the bolt to try to pull the balancer on. You'll strip the thread. You can rent a balancer installer tool at most parts stores once the crank is threaded. By bolting the pusher to the front of the crank and using a big, fine thread to install the balancer, there's no danger to the crankshaft thread.
I used to offer a drill and tap tooling set to fellow stovebolters for a nominal rental fee, but since two kits have been stolen so far, I doubt if I'll continue to do it. My kit included a balancer pusher, and guide bushings for the drill bit and a 7/16-20 tap so a clean, straight thread could be cut. It can also be used as an alignment tool for installing the timing cover in alignment with the balancer. One tool set is near Chicago, and the other one is near Los Angeles, if anyone is interested in collecting a reward for retrieving them. PM me for names and addresses.
Jerry
