Hi, any guys out there good with the carbed 2.8 with all the vaccum ****?


I just was given a 1984 camaro , car is in excellent condition interior is like new, paints nice, engine starts and idles but stalls after about 4 or 5 mintutes. will start again but same thing happens.
I have removed the egr and cleaned it. it is holding vac.
cant't find a vaccum leak.
I ran seafoam through the carb, and in the gas.
plugs look good.
Not sure what to do next? any help would be greatly appreciated.