Does anyone know if the rods are different between the forged crank and the cast crank engines?
The engine I have is a 72 or a 73 340. The numbers are not immediately clear but the prior owner said that it was a 73. It is supposed to run great but I'm considering a crank swap. I'd expect the journals to be the same size but it is the issue of balance that I'm not familiar with.

Side question: If I keep the engine as-is, what is the amount of torque converter balance weight?
Thanks, Greg