car won't crank.

Redfish. I had the starter bench tested at one of the local auto parts stores to start a 68 340 engine, so the starter should not be the problem. This is the second battery I've had in the car as well. The first one I wasn't sure of, but this second one starts my slant six start just fine.
Just to be sure, I will put the battery on the charger for a couple of hours then try to crank it again.