[Pete]

In 1960 we cut one bank off of a 283 Chev block to make a 4 cylinder engine for a midget race car.
We made the crank from a 6 inch round SAE6150 billet in a lathe.
The engine made 240 hp on the dyno and won the first 4 races it was in but the block broke from lack of support from the missing bank.

A model A crank could easily be made in a home shop this way if someone had the ambition.