[juanbenae]

are you using the OE ignition box? carbs generally are going to need a hotter box & coil such as an MSD and blaster coil to generate enough spark. a recurved distributor is almost a must to get the advance the carbs like. also a worn distributor shaft will play havoc on a consistent timing effort.

if you are not already familiar check out paul's (1QuickS here) performance oriented web site. great weber info there on a wide range of carb set up and theory.