I dug out my carb spec sheet (my carb guy supplies one with every carb he does) and low and behold I have a 6.5" power valve which menas it is open waaaay too much. I'll be changing to a 3.5" asap. I confirmed on Holley's site that they recommend 1-2" less than light acceleration vac pressure.
Hopefully problem solved. I let you know what happens to the mpg after getting it changed. Live and learn.
Thanks again Panic and Tony P for recommending the vac gauge. It helped me explain to all of you and understand what was going on! I would recommend it for all performance/mpg diagnosis.
