408 ignition curver advice

cpearce said
What do you base this on? Many of us with 408's have found quite the opposite, in fact, mine pics up considerably with a 950 over an 850. I'm not looking to start an argument. I just wonder if this is your opinion, or do you have empirical data to support this?

How do the venturi and throttle bore sizes compare between the 850 and 950 you've tried? I've found that 850 carbs usually have larger venturis and maybe larger throttle bores than some 950s.