Going to need much more information... there are a few things that come to mind... first, did you set the float levels correctly? Check your float level. If it's too low, it won't run and if it's too high, it will flood and die. Next, did you index the air screws? Turn them in til they seat and then back them out a turn and a half as a start point (usually VERY close). Then, set your idle speed screw. Turn it til it just touches the linkage arm, then turn it in a turn to a turn and a half.
This all assumes that everything else was done correctly when you rebuilt the carb. Did you soak it in carb cleaner over night? Did you rinse with good solvent afterwards, did you blow out all passages? There is SO much to rebuilding a quadrajet (or any carb) in order to make them run correctly.
OH... since it's a '67... make sure the base gasket is installed correctly! If it's upside down, it will open up a passage to the atmosphere and run like crap!
When the only tool in your toolbox is a hammer, you tend to see every problem as a nail.
Last edited by chuckha62; 04-15-2014 at 12:21 PM.
Reason: fixed multiple typos. DOH!