I now put a 120 amp fuse at the alternator and one at the battery. Forget size but I think it’s a 300 amp or so. Protects against these types of conditions.

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