[chiphead]

I also think the target market doesn't understand any of these differences between a well done Q-jet and a cheap AFB clone. The AFB is shiny and new and it'll make the car run, so SOLD. They have no idea about tuning.

On the car I just bought, the PO slapped a QF 850 double pumper and RPM intake on a warmed-over 400. It ran rich so he swapped it with a QF 750. It still ran rich, fouled plugs, wouldn't idle, etc. I found that the idle mixture screws were closed, the fuel level was too high, the choke was wound tight, the fast idle cam was totally out of adjustment, the pumpers were out of adjustment and a leaking vacuum plug.

I'm always amazed that people think you can take a carb out of the box and slap it on without tuning it. I'm also amazed how many people think the idle mixture screws affect the cruise mixture. I'm boggled.