This is a feeler to see if anyone has solved the big block Autolite 4100 callibration issues with a Y block, or non big block.  I have tried in the past & finally chalked it off to air bleed incompatibilities for the smaller motor.  I read a posting on here that was reminisent of everything I tried to get the carb to meter properly below 2000 to no avail. 

Has anyone ever successfully done it?

I know Pony Carbs makes a 1.08 that they fit the larger butterflies to the secondary side.  I unfortunatly am without a machine shop, or I would.  I have successfully bored the secondary ventury slightly, as well as slimmed both shafts for significant improvements. 

Thoughts?