[screamin_c10]

Welcome... personally I think a 600 CFM carb is a bit small for your big block. The edelbrocks run small anyway.... As far as the choke issue and what appears to be a fuel starvation isuue I would refer to the Owners Manual to properly setup the carb.... Just remember the 1406 is a 600 CFM carb jetted for economy over performance.... works great out of the box on a mild 350 small block.... runs like crap on my built 355, hence the 1806 and alot of tweaking.

http://www.edelbrock.com/automotive_...406_manual.pdf