I relocated my battery to the trunk, put it in a NHRA approved box and discovered that the battery is puking acid in the box and it's dripping out around the hold down bolts. The car has a Powermaster GM one wire alternator and according to them is functioning properly. Now I need to rethink my battery selection.
That sounds like it's overcharging the battery. Even though it's a one wire alternator it has to get a "Sense" of the voltage in the system to regulate it. If it is thinking the voltage is low it will crank up and overcharge your battery and still test fine on a bench tester.
Check your voltage and see what it is at the battery and alternator when running and shut off. I may be wrong but I think it will be too high at the battery when running.
