Offenhauser Manifold with Stromberg Carbs (6-Pack/Tri-Power)

Depends on you.

A progressive set up makes use of the center carb first and then the out boards later. Set up to open all 3 crabs all the way by full push of the pedal. Bennifit? Probable better gas mileage with the center use of the carb alone at low throttle pressures. (AKA Light foot) Draw back. Possible pain to set up. Primary first, end carbs second and removed at the same time.

The 1 to 1 set up allows all three carbs to work at once, as one carb. Bennifit? Full power at all times is available. No brainer set up. Draw back? All 3 carbs are working delivering fuel. When tuning, all 3 carbs are removed for jet adjustment.

But this is normal steps to take with multiple carbs. Nothing new here.

How many cfm's are those carbs?