Actually the 273 HiPo AFB and the Max Wedge 3447S AFBs do have the weighted secondary doors or velocity valves as they were called. Also the '67 HiPo 440 used a AFB not a AVS. I believe Chrysler began using AVS carbs in '68.
Thanks, it was my understanding that they starred in 68 as well. But just trying to make sense of this odd carb. Anyone have a 67 commando carb to compare? I've scoured the internet and can't find any pics.
