Seriously?? We finally got tired of that 340/360 thread, and you had to start this all over again!
:lol: Instigator...
I know it's the dead of winter and we're all really bored (-10* this morning, my old fluorescent shop lights won't even fire up).
Since you didn't specify, I vote for the 273 simply because the Commando/Charger is the best looking small block ever produced by Chrysler, with the possible exception of a 340 6bbl. (without the air cleaner on). The 318 didn't even get a factory four barrel until, what, 1978?