I've been having problems with my engine stalling after stopping at traffic lights. it will randomly stall and i can usually tell before it happens by the engine rpm surging from 1000-500. most of the time i put it in neutral and give it some gas to stop it from doing so but its becoming a pain in the ***. im always paranoid at every traffic light.. and my headers make my starter too hot so im scared ill be broke down someday in traffic.. any ideas? I have a holley 650 with a #34 or 36 squirter for the primaries. I'm guessing its either too much fuel or the lack of it. it runs at a consistant 6-7 psi. my cams not that big its a comp xr 270 with .502 lift. any suggestions would be appreciated, thanks!

a vacuum leak can cause the irratic idle like that. or the idle could be set to low.

Do you have a vacum can hooked to the brake boster? I had the same thing happen, but differnt car. You can find them in JEGS and Summit for about $50.. Just make sure the check valves that do in line are the right way.. What can I say I was young and dume at one point, but we all learn.. Have fun

Same exact symptoms mine had. Sounds like a bad fuel pump bud. Mine would be misfiring and chopping all over the place and die, but if I put it in neutral and got it up to 5k RPMS it would smoothen out a little. It will keep doing that until the pump will start quitting.

I don't know if it's happened to you yet, but basically mine eventually started to die for 10-30 minutes at a time and if I tried to start it, it would be choppy and die. Put a new fuel pump in and it ran like new. Let me know!

I have a fuel pressure regulator with a guage on it that says its at 6-8 psi. ive checked the fuel bowls and they have always been fine also. So the vaccuum cannister slowly takes vaccum so it doesnt rob enough to stall the engine?

How's your timing set?

yeah im having this same issue but mines a 305 tbi and all my vacuum stuff is good but i know my timing is out of wack check that.

I had a astro with a 355 and a big cam. Everytime I came to a stop the rpm would drop and I would stall. I put a can in line with the brake booster and all was fine. Beating ruststangs in a van was fun.

Hey did you ever get this problem solved? My 88 Iroc is doing this to me right now I thought it was maybe my air supply? I've replaced so far my IAC,TPS, O2 sensor and still it does this? Would appreciate any info.

BigKeg I don't suppose you could give us alittle more info about the brake booster and stuff?

I'm ordering some parts tomorrow and i will see if all is well. I'm going to by a Vacuum Reservoir along with some new antifreeze because i have a bad mixture, and im going to wrap my headers.

* what header wrap works the best? I need to know asap im ordering it tomorrow morning. thanks!

If you look at your brake booster, you will see it has a hose on it. That go's from the booster to the back of the the intake someplace. ( differnt intakes differnt spots carbs are on the back of the carb ) but any way. The can looks like a big coffee can. Depending on where you put the new can, depends on how much new hose you need............. OK look at the booster, see the hose on the booster. The hose is hooked to a check valve, the check valve is pluged in to the booster. ( you will need another check valve to do this ) The check valve is a one way door, but allso it is a way to hook the hose to the booster and you will need to put one on the new can. So take the new can with the new check valve and hook up the hose that comes off the back of the block. The can will have 3 holes one for the new check valve, one for a gauge and the other you need to go from new can to the old check valve on the booster. Have fun.....

I was stalling at lights when at operating temp. Just got the motor in with a cam that is even smaller than yours though. I added about 5 degrees around idle and that has slowed the rapid climbing temp as well as stalling. I've even picked up a bit of vacuum.
I'd double check that and make sure your advance is working correctly.