Loading up at idle issues help...
I have a 98 vette with a Texas speed high compression 347 with a custom ground roller cam I have had the car for over a year with no issues lately the car has developed a surging idle problem it will jump up and down between 500 and 1300 rpms before it levels out. When you cold start the car it is fine but after it warms up it goes to a rich idle and begins to load I have replaced the oxygen sensors and I am fixing to change out the mass air flow the car has never given me any idle problems until now ..

