Does anyone now how to work out what jets/needle combo to use for a edelbrock performer 1405 on a 305 Chevy It feels like it bogs when the secondaries open, i know i have asked this before on a different forum and i was grateful for the advice but was too embarrassed to state that it went...

Just fired up the Chevy after a two week hibernation & its running as rich as it ever has! Black smoke, stinking of petrol, sluggish, the car's just the same... :D. Fuel pressure gauge shows 8 psi on tickover. Carb is an Edlebrock 600 4-barrel. The carb is off Andy (58 Delray's) 58 which has...