Do you know what are the stock metering rodes for a 600 cfm 1406 edelbrock carb. because when i hit the gas, black soot comes out the pipes. the metering rode i got in it right now are 16-691 .076x.055 so where can i go from here i got the metering rode and jet kit, i have looked at the jets and they are stock so i know i don't need to change them. i got this carb used and they said that they have changed the rodes but they didn't remember what came out of them.
the carb is on a 327 bored .060 over, with a 3 stage over rv cam
high rise edelbrock intake and a nether 4in lift on the carb. if you need any more info let me know.

thanx for all your help
Cd