For starters, I got an 86 IROC TPI, all origional, except it has a 350 instead of the 305, no other changes.

Now for the problem, after about 30 to 40 minutes worth of running, the car will start acting as if it is out of gas (even though it isnt) It will choke out and do its best to die, I can kinda keep it goin if I hold the RPM's up, but it will still try to die. If I shut the car off and wait, it will fire back up and run fine again, but if I wait only a couple minutes the same thing will happen again in about the same amout of time it was sitting shut off. So it appears to be something getting hot. Another bit of evidence is that, most of this week it ran just fine, (I have just replaced the injectors so I thought the problem solved) But today was much hotter than any previous day this week and so this little bug came out once more. And its the same route everyday, to and from work, has acted fine, no problems, I even got stuck in stop and go traffic for about 20 minutes two days ago and no problems, but except for today the weather was mild and not too hot, today was. So if anyone has any ideas Im all ears, if anyone has any suggestions, I'll give em a shot over the weekemd and report back.

Thanks all