how large of a carb can perform well on stock 273 commando ?

Eddy 600 all day long.

So 50cfm and brand is the make it or break it?

I've run a QJet off a 72 Chevelle 350 on a stock 273 Commando and it would take whatever cfm that is. I really like the factory AFB's also.

Hmmm...

You seem to be outnumbered.....

Just the way I like it.... i'm not a can'tbeat em' join em' guy. Keep running your vacum secondary only carbs only on automatic cars and make sure it isn't 50cfm too big. Oh, yeah and stay away from those poor performing Holleys. No one runs those with any success. :coffee:

Give me the proper Holley,every time. I prefer consistent response.....

Bingo:compress: