My 85 Z runs like S#@% now...I was bringing it home from my brothers house i got about a mile away and it died on me (Overheated) and would not start back up, so i pushed it into a parking lot and let it cool down a little. About 15 min`s later i got it to start but it ran like s*#@ and i got it home .It will start but it chugs like a train and when you push the gas it slowly revs up. I thought it might be a head gasket so i took out the plugs and looked in the cylinders with a little camera and there was no antifreeze in any. I changed the distributor pickup coil , distributor rotor ,TPS ,coil, Fpr , plugs & wires looked at the wastegate actuator (it`s broke and don`t have another one) put a new fuel pump & filter in it, I did notice that when i run it now ( I ran it for about 5 min`s ) the motor, and exhaust was not hot but the turbo was so hot i could not touch it. I was thinking maybe out of time , vacuum line or a clogged turbo ??Anyone have a idea what might be the problem ??