Use your balancer (steering wheel) puller after removing the balancer bolt. You could also loosely thread the bolt in 4 or 5 turns and push against it with the puller's center screw
I tried that. Seems like the last engine I did was a small block Chevy, 35 years ago, I was able to put a bar through a hole in the flywheel to keep the motor from turning. I've quit for today.
Thanks for the ideas
standard-leave flywheel on. auto-have converter bolted to flexplate. have helper stop rotation by useing a big screwdriver or lugwrench to stop rotation by leaning lever against a dowel pin. hit breaker bar with a hammer
You can always see if your local parts store has electric impact wrenches in their loan a tool program. Harbor freight has electric ones for under $50. ( if you don't have a compressor, seems like money well spent ) I have a Hilti battery one ( I know a little pricey ) but it's worth every penny when I need to use it in the yard.
Desperate folks do desperate deeds.
MacGyver approach. Two longer bolts attached to the crank flange and an old bumper jack should do it. An old rod cap and long bolts can pull a balancer off.