During these issues and several before and after, the Thor solo book got so bad that Marvel let relative unknown Walter Simonson take it over in a few months and literally shatter the logo and destroy the character, replacing him with Beta Ray Bill.
In this story, Thor fights Dracula.
It’s not great. Sweet Bill Sienkiewicz cover though.
Creators: Alan Zelenetz and Don Perlin (#332) and Mark Bright (#333)