Edelbrock 600 carb issue?

x99

accelerator pump...$13.99 at O'Rielly's....on the shelf.
I'd definetly replace that.

Never hurts to do a Ignition Tune Up either....that plug looked like crap.

You might pop the distributor cap, chunk it and the rotor, replace with new and go through all the plugs and wires....then:

Set/Check Initial Timing.
Set Curb Idle and rebalance your Air/Fuel mixture screws.

http://www.edelbrock.com/automotive_new/misc/tech_center/install/carb_faq.shtml

best of luck.