Question about TQ secondary operation

RustyRat,
I think you misread what I said. I am fully aware that AV opening is adjustable. What I said was that on the Aussie Ford TQs that had much smaller sec jets, the AV position [ at WOT ] & shape was the SAME as Mopar TQs, so how can they run on such small jets?

Rumblefish,
Sorry, cannot explain the lines. They do not show when creating the post, only show up after it gets posted. Yes, AV= air valve.
Holleys replacing TQs. That was done by individual Ford owners. These years were the final years of carbs in Australia & with tightening emissions, had really lean calibrations, so performance would have been lacking. So Holleys went on, when a set of numbered drills would have transformed the performance of the TQ......
The Ford TQs had larger pri jets, but also had larger pri air bleeds. Some had 101 pri jets, & these were 800, not 850 models. Not aware of any 800 Mopar TQs having pri jets that big. The met rods were generally 73/40, so leaner on the cruise step.

AJ,
Who cares? I care. As a tuner, if you know how something works, less likely to bugger it up if you want to modify or improve on it.