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I did read up on that a bit, I guess part of an emissions control they were trying to do. I wonder if it's worth messing with beyond this point or just replacing it with something newer. I plan to drive the car quite a bit once it's road ready and the rich idle is pretty obnoxious.



This reminds me of a recent tuneup I gave my car. 600 1405 edlebrock carb on a 340 with a 474 cam.

I got the vacuum gauge and timing light out. I didn't change my timing, 24 initial and 35 total plus vacuum advance.

What I did windup doing is open my idle mixture screws a little and that helped my idle. But also what I think it did was got rid of some of the smell from my exhaust. I have always thought rich idle caused the smell, but I'm now thinking it was a too lean of a idle causing some of the smell? At least in my case.