Purpleshaft .484 Cam in a 273?

There's a couple of guys on here running large cammed 273 and seem happy with them. Ones also running a tunnel ram too.

Conventional wisdom says that cam is way too huge for a 273 but i dont think most take into account head flow. 273 and 340 have similar head flow to cid ratio. So in my theory it should take similar amount of cam degrees at same rpm to fill the cylinders in other words should act similar in a 273 as in a 340. But your gonna fall into the main problem with building a 273 or any small engine is they need a lot more gear than a similar built 340/360. Plus a lack of CR and stall ain't gonna help with this cam.