If you want to crank out a real alternator TIG welder; use the single-V pulley off of the old Delco and mount it on a more recent Ford 3g 130 amp alternator (which will have a multi-v pulley (serpentine belt)). If you ask nicely, you may be ably to get suitable pulleys for free from your local auto parts store (I did). The Ford alternators are cheap, and ideally suited for this. Head over to car-part.com and select; 1996, Ford Taurus, alternator, and whatever state you're in. Then select any of the 130 amp alternators listed. I see a number of them listed for $25.
To get 130A output, you will need to spin it at around 6000 rpm. It has a small pulley, so a 3-4" or so on a 3400 rpm engine will be ideal. I have never measured it, but I would say that it will produce a lot more than the rated 130 amps. No disassembly of the alternator is necessary. There are two externally accessible bolts that you can put ring terminals under to power the field. Remove them one at a time, or the brush assembly might snap off. It's no big deal, you just have to then take four more bolts off to remove the regulator to get at the brush assembly to put it back on. The field only draws 3-4 amps. All of the electrical connections for the alt are external, so it is a very cut-and-paste sort of process with, like I said; no disassembly required.
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