Happy 331 day! Gurney Weslake 331 day to be specific, but Cadillac made a 331 also

 based on a Ford 302

https://store.cobraautomotive.com/331-cu-in-gurney-weslake-engine/

https://en.wikipedia.org/wiki/Cadillac_V8_engine#/media/File:Cadillac_OHV_V-8,_early_fifties_(24311977458).jpg