car won't crank.

This isn't a mini starter. I don't know if that makes a difference. It's just a big old starter. It is so hard to change the starter on this car I really don't want to do it again.
The starter may work but if it's corroded internally, it could be drawing too much and overloading your battery thus destroying it. This happened on my 78 power wagon, 3 different testers said it was good but it kept needing jumped to start, finally replaced it and it's been fine since