273 Commando Engine Build

Your not gonna find much info on 273 especially over a stock commando build, When I was thinking doing a 375-425hp 273 I read/watched a lot 4.8l LS and 2 valve 4.6l ford engines you just translated to what that be for a 300-350 hp 273.

A stock 4.8l LS dyno in dyno trim like 330hp which is something like 9:1 220-230 cfm heads headers etc.. and super mild roller cam. It's all in the heads will make or break your combo goals.

I'd use a magnum replacement.