My Camaro just had a head gasket replacement when its cool and starts up its perfect but after its warmed up it will start to bog out and won't stay on. Anything anyone can think off. They were messing with the distributor for the timing. But got that perfect. But now when its warmed up it bogs out. I have a good friend mechanic that he thinks its the distributor or a cool air sensor...please help

1992 Camaro rs

Has a 350 TPI everything stock

Just put headers and exhaust and like I said just had the head gaskets replaced