1978 L-82 emissions removed. Engine runs fine when cold,as it warms up it will shut down during accelleration. It will restart after a couple of pumps on the gas pedal but will continue to stall during accelleration. I have been completely through the fuel system from tank to carb.,replaced fuel pump and all rubber hoses on fuel lines on my mechanics recomendation, after he went through the carb. I also replaced the screen in the tank and checked the vent line. Mechanic says problem isn't elecrical. I have also noticed one of the header pipes starting to glow just before engine shuts down.Frustrated and out of ideas. Any thoughts?             Dave

I'll bet your timing is off.  I've seen that make the headers get real hot and glow. Don't know why it would run smooth at idle.  I'm sure one of the experts will chime in . . .

It sure sounds like it is running very lean.  It would run better when the choke was not yet wide open, and gradually get worse.  It could be an internal carb problem, or maybe it was not re-jetted when the smog equipment was removed.  Or it could be vacuum leak.  Do you have other intake or exhaust modifications?  That would make it run lean.

Good Luck
Larry

No intake mods. Original Rochester Quadrajet. Had it rebuilt 2 years ago right after I removed what was left of the emission components (charcoal cannister and items related to the exhaust system). Car Was running great until last month.  At operating temp. I tried to maintain 2500 rpm while manually closing choke about 3/4 and it still stalled out after a minute or2. 

Definitely  a lean condition if you have header pipes glowing. If you have access to another carb, I'd try it to see it there's a difference. How much advance are you running?

You say "One of the header pipes"...do you mean the car has headers, and only one of the tubes is glowing? Or...does it have the stock type exhaust, and the front pipe that is bolted to the exhaust manifold is getting red?

Couldn't get my timing light to work so i can't answer that question right now. The car has headers and a true dual exhaust, no convertor. The left rear (#7) is the only tube glowing and that only happens just before the engine shuts down.

after having ignition module tested  and checking the timing  I was almost certain that the carb. was my problem. I replaced carb this morning- no change.  Then I put the vacuum gauge on. Vacuum was low but constant (12 psi). The manual indicated possible intake manifold leak. With engine running I tried spraying carb cleaner around edges of manifold. I immediately got my answer. Engine idle fluxuated and I was seeing bubbles especially around left rear. I guess its time to pull the intake manifold and replace the gasket.

This sounds exactly what I was experiencing. I had the qjet rebuilt and it was just not right..  Long story stort - I swapped a Edlebrock 650 w/a non-egr manifold and the car runs DOPE!  My car is also de-smogged. Best thing I did was ditch the quardabog