Battery not strong enough for new engine

[Fox Body]

Hey 82GT, going back to the starter....... you said (in your other thread) you got it from a '92 mustang? Had you ever used that starter b4 with this current setup, ie, has that starter ever cranked that engine b4? What year vehicle is the C4 from and do you know what starter you have in comparo to the flywheel? If you're running a C4 the starter has to be a starter that matches up to your flywheel. There are the 57 and 64 tooth flywheels. A diff would cause binding in the teeth. If your C4's from an older vehicle (say, pre-87) and your starter is from the '92, they could be mismatched. Just wondering.....