Quote: If it bogs with black springs why would I go down to a lighter spring? Wouldn't that just make it worse?
black springs are too heavy. i think your problem is something other than opening rate. check the float level and fuel pressure. if your using an aftermarket vapor seperator the return hole is too big reducing fuel pressure. check the distributor to make sure the centrifugal advance is working. were any mods or aftermarket parts added to the carbs? intake manifold leaking? i've got an edelbrock ch6 on one of my cars that had a hole in it, (casting flaw)!
