Mr. Chuck said:
My 81, which I purchased new in 81 had one factory design problem that showed up at about 51K miles; that being the #3 valve cam lobe rounding out as a result of the higher running temperture caused by the exhust gas recovery system that routes the hot gas up into the intake manifold near #3 cylinder. The shop that replaced the cam told me that the factory had failed to properly harden the cam to compensate for the increase in head temperature. The replacement cam evidently must have been better since I have since put about 75K miles on it. The cam failure was evident by a rough idle that caused me to take it to a local vette shop to find the cause. Your 82 may not be suspect, if the factory had corrected it mistake by then. I never hear of any recall related to a cam / idle problem, you may also want to read any computer error code that may be stored in you control module.