I have a '79 454 in my '69 nova. It was running fine and great (besides needing a new fuel system, working on that) until I parked it on jacks for a month or so to do body work on it.

WHen i got it and and drove it the other day, ir was fine for the first few minutes then it started to studder and chokejust a little bit. I thought it might need gas or something so I filled up, and started and again it was fine. As I drove more, again after a few minutes it did the same thing, and the longer i drove it the worse it got. After shutting it off and restarting it, it would run fine again for a few minutes before progressively studdering more and more.

The car is at the painters for another day, so I haven't had a chance to check things out. I do need to re-do my entire fuel system because it is much too small for the engine (original lines for a straight 6). This hasnt been a problem before though, so i'm not sure why it would be now?

The carb is a tired old Q-jet. I was wondering if the fuel filters were getting clogged but that doesn't explain it getting worse the longer it runs does it?

Please help!
Eric