Manually crank 265 Hemi

Hey

Looking for some help.
I have stripped my 265 Hemi, and removed the auto gearbox.
Just wondering how to manually crank the engine so I can rotate the torque Convertor to get at the bolts to remove it.
The harmonic balancer doesn’t have a large nut to put a braker bar on to manually crank it.

Cheers
Bowden Grayson