Brake Drum Hole Diameter

["John P. New" <jnew@hazelden.ca>]

Hi,

I am just in the process of trying to find a place to have the balance
on my rear brake drums (BJ8) checked.

The shop said they wanted to know what diameter the central hole is in
the brake drum, so they know whether or not their machinery will accept
the drum.

Not wanting to dismantle everything at the moment, does anyone have a
brake drum lying around to measure?

Thanks,

John P. New
London, Ontario, Canada
'67 BJ8