Quote:

...says that some bogs cannot be tuned away unless the air door is tight against stop. He was right.



I just installed a new TQ from Scott @ Harms on my bone stock '76 440 (GREAT job, Scott, BTW).
The engine never ran smoother except for a slight bog upon stepping on the accelerator. Because of this thread, I went to check on the secondary air door gap. It was dead on according to what you guys described.
Frustrated, I noticed something. The bowl vent lever arm.

Picture no. 1 shows the position as it was on the new carb.
Picture no. 2 shows it as it was on my old carb.
I repositioned the lever on the new carb to the same position as the old carb and the bog went totally away.

I'm no genius on this stuff and I have no idea what I did and why it worked but I had to throw this out there to you guys.

Pic #1 (lever position similar to the new TQ):



Pic #2 (lever position that is on old TQ):



but it cured the problem.