Please Help!
That happened to my '68 GTX one winter in my college parking lot. I was freezing my nuts off. Fortunately, the wire broke about one inch outside the sleeve. I took my toolbox from the trunk, bent the stump into a very sharp "v" shape, wired it to the Holley, and wrapped it with some electrical tape. It got me home and then to a Dodge dealer to get a new cable.