See 1976 Chevrolet pickup with Rochester quadrajet upgrade on SBC 350 V8. We removed the hood, mounted a camera looking down on the air horn, and took it for a spin, running wide open on an uphill grade. See how the secondary air valve responds to rpm drop at each upshift of the THM. Also included is a smoking burnout.
re-jet your Quadrajet (part 1)
rejetting a quadrajet
re-jet your Quadrajet (part 2)
rejetting a Quadrajet
How to adjust Quadrajet secondary air doors
These take some trial and error to get them adjusted so that there is no
bog, but it's not hard to do-here's how.
for Tim - Rochester tips