Hello Bob and Paul,
Paul, your reply to Bob prompted me to do an online search. Hoof governors are still around - Accessed 3rd October 2023 from
https://hoofgovernors.com
Plus there is at least one related spare parts supplier.
Accessed 3rd October 2023 from
https://centuryfuelproducts.com/brands/hoof
I am not sure whether the models or spare parts link back to the 1930-40s though. There would only be one way to find out.
Kudos to your long-term memory recall, Paul!
Now, with the latest gap revealed in my knowledge about Chevy motors filled - I now know what a Hoof governor is! I will exit stage right... and I will return to lurking in the background mode.
Kind regards
Lionel