I recently noticed my stock amp meter pegs to charge with acceleration. When I let off the gas is comes down to neutral but as soon as I accelerate it revs past the charge position. It is a bone stock 1963 Chrysler 300 with a 383. Any help is appreciated.

1963 Chrysler 300 Pace Setter Convertible 21K mile survivor 1969 Dodge Coronet 500 1956 Desoto Hemi 1955 Chrysler C300