Looks great! This will be a fun post to follow. There's no reason why a 273 can't be a screamer with some head work, the right compression, and the right cam. (not too big) toolmanmike
I have my orginal 273 in the garage that has 11:1 compression, 340 cam and solid lifters. That little red engine was a screamer and used to eat 350 Novas and Camaros and spit them out constantly. A well tweaked 273 is an awesome smallblock!