I think all the info on the webers is great,all have a good points. I think Jim #2 point about sea level and and alitude is right on. I put a 911 motor with webers in my VW buss 1971 and it almost die one summer going over going to the sun road in Montana. Thats the summer I melted two exhaust Values off 106.degrees and 9,000 ft Air cooled and all Alum. didn"t help
I did not tune my webers back then and didn"t have a feel for how they work. I do no that ever thing fast in the olds days had webers on them. My first ride in Cobra was in small block 289 with webers and that car flat pin you in the seat.
My son who work on a funny car team for two season say carbs are like drlling holes in a wood block and pouring gas in., and he is very good with carbs. FI is the way to go, but the price has to come down for the average guy to have one. I just got my webers for my big block ford and am looking forward to getting them right.
A
ndy