To sum all this up, a carb depends on the vacuum signal to draw the fuel from the bowls into the venturis, the bigger the carb is, the less vacuum is there to feed the fuel to the venturis.
"EFI is like baking a cake using precise measurement cups. Carburetors are like baking a cake by throwing flour at a ceiling fan on high speed." - Warren Johnson
a 600 cfm carb is all you need for most street apps, most carbs are very tuneable for most applications above stock, if you find ya need more carb, latter on, then go bigger, by the way, thanks for the trip through cyber space, keep it simple, gain knowledge, and have fun doin it
those carbs are great man, i had a lot of cars , different motors, with that carb, and ran great, very good power, and did not dig into the wallet,
Just a 250 straight six but I've removed the chack ball, choke horn/choke, added a nitrophyl float and 6 an feed, drilled the pvcrs out with a #29 drill bit, tapped it to #8-32 ... and now im in the process of finding a numbered bit set so i can build power valve jets oh and im looking at building up the ring around the edge to make sure it holds boost
lol don't suppose I could find out where ya got them? I got lucky and found a #29 online cheap, but to make the jets ill need all of them from 50-40ish