Lionel,

From a quick web search, check out this ad I stumbled across for a NOS Chevy 235 Hoof Governor.

The pictures in the ad of the one side plate shows it is stamped "CHEV-235" and Model# "K-313".

Hope this at least helps you ID the particular model info you asked about. wink

Dan


~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)