Haven't measured the bore yet, but will check that. Cylinder #2 is probably heavily pitted. The intake valve for that cylinder was stuck open, and rainwater got into it even though there was an oil bath air cleaner on the carb which is also rusted shut (but it's a Rochester B, so no real big loss.) The air cleaner was actually a "water bath."
Jerry, I have a much stouter OTC Stinger harmonic balancer puller than what you linked to, but the slot spacing doesn't go down to the 2" spacing on the crank gear holes. Your idea of drilling and tapping could work on the cam gear, but the FLAPS rental (actually free) puller will probably hook in the two screw access holes.
Phil, I've built a steering wheel puller with a piece of steel plate. I'd have to modify that to use the screw from one of my pullers, but probably don't have a tap of the proper size to do that. Just using the bolts screwed into the wheel works for steering wheels, but I doubt they'd stand it on a crank gear without stripping the threads.
