Strange starter issue.

[krops cars]

You may have voltage, but not the right amperage. Unhook coil wire. Go to starter. Check voltage during cranking. Or I don't know if this would work. If you have a quality set of jumper cables. When it cranks hard take your cable hook from battery to solenoid and see if that makes a difference.

[c00nhunterjoe]

1/0 is more then enough. I dont even have that large in the 63 to save weight and that is 13.5:1 compression and it spins over nice and fast with a single red top in the trunk.

[krops cars]

Good point. I 'm saying make sure it is heavy enough. I see that a lot in trunk mounts and also not grounded good enough.

[Kern Dog]

The new battery solved the problem instantly.
Before, the running voltage with the car idling was in the upper 14 volt range as if the battery was in need of a HUGE amount of juice to recharge. Now it idles in the high 13s.
It cranks over great in any condition.
The new starter didn't make a difference. Bypassing the solenoid didn't either. The battery made the difference. I hesitated to blame it since it was so new.

[XH29N0G]

It sucks when something new is the culprit because it shouldn't be that way.  Glad you sorted it out.

[Kern Dog]

    Thank you. I feel the same way.
It can't be the battery...I bought it a few months ago!

[green69rt]

The new battery solved the problem instantly.
Before, the running voltage with the car idling was in the upper 14 volt range as if the battery was in need of a HUGE amount of juice to recharge. Now it idles in the high 13s.
It cranks over great in any condition.
The new starter didn't make a difference. Bypassing the solenoid didn't either. The battery made the difference. I hesitated to blame it since it was so new.