Inliners International Forums General Discussion Engines Proper Carb sizing for inline 6? 194 = 315 CFM?

I run a 390 on a 240, and a 450 on a 300. Both work well. You will have to fatten up the pump circuit on the 390 (bigger squirters).

The 350 Holley 2-barrel is only equivalent in 4V flow depression to about 250 CFM - which should do fine on a 194. That's where I would start. Good luck.