LMFAO Anybody figure out what this is?

I bet it would do better than you think. "273 2bbl" maybe Decades ago, I experimented with a 283 sized Rochester 2 jet on the 440 RR

LOL During the 70's "gas shortage" Crower (I think) made 440 conversion kits to 4 whangers. Can you imagine a 220 cube 440? Kits were a mess. I can't imagine they sold many

The patent
US3874358A - Engine conversion system - Google Patents