I need to find out what spacer (edelbrock) to adapt an edelbrock #1406 to my stock 283 chevy intake manifold #3746829. I had the original carter wfb carb rebuilt by pros, however, it leaked terribly when I got it back so I kept it but am trying to get the beast running (60 Apache 20 4x4). Also I didn't know if I am going to big with this 600 cfm carb (ilo 500 cfm) or even a 2 bbl?
