440 Help Needed

I just have a hard time believing this is carb related. Even if the AVS took a dump, that new 750VS should have been able to bolt on and clean it up at idle. With 72ish jets and even a 10.5PV it should idle with the vacuum he has 10/15.

Maybe it's ignition related, who knows? I know the heat riser is gone, but still seams to me like it's acting like a restriction somewhere. Any chance a baffle in one of the mufflers broke loose? Run it up to 2500 r's or so and see if you have even flow out of both tailpipes?

Ok, that's all i got...:lol: