When I had my 1985 Dodge Charger, it blew the fusible link. I measured around 120 volts at the alternator - I didn't believe it. Hooked up a 100 watt drop light and it fully lit up. So for sure they can put out 120 volts...............

67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......