If your pedal is pegged and the carb isn't all the way open, I would think you need to adjust (bend) the pedal rod so it has more travel. Any other 'adjustment' to linkage/cable would probably also affect the idle. Just my opinion.
Have you changed the carb?? or is this been this way for a while?? Butterflys hitting anything??/ Can you Open the carb up without the linkage hooked up?? If you can , then it is the linkage adjustment then. Maybe some put a 2x4 under you gas peddle so you won't get a ticket!!
Pete, if you can give me a day or two (or three), I can likely get you an exact response. I had the same problem on my factory QJet. It has since been fixed. I just have to go back and look at it again so I can describe it to you. (I'm at work right now.)
Also, make sure your choke is open. There is a link that prevents the secondaries from kicking in. My hunch, though, is that your cable is stretched. Did you change to an aftermarket intake? You may need to get a kit from Summit Racing that allows you to adjust your throttle cable and kickdown cable positions. If so, please post and I can let you know the part number-I have a couple of spares at home.
This is a low tech fix but it worked for me. I also noticed that with the gas pedal to the floor I was not getting WOT. After fiddling with the cable for a while I just grabbed the medal rod that the gas pedal is mounted to and bent it up about two inches. Now WOT is reached well before the pedal reaches the floor. I figure after 30+ years the rod just got bent with normal use.
Ok, I'm late to the party, but thanks for the replies. I have the stock Qjet, and intake. everything the linkeage is stock. I'm driving the car to work tomrrow so I'll get someone to mash the pedal to double check.