So I was at work and had previously tore down my 87 505 turbo 5speed and found a flat lobe on the cam over the #3 piston and I cant find parts so I scrap parts from the previous 505s Ive owned and well that made this car scrap. So I called some cash for car guys and they gave me $150 for it. And I sent my co worker in my 85 505 to meet up with the guy and get the money. Well he must of liked that boost cause he called me and said it sounds funny and smoking out of the tail pipe. So I knew blown head gasket form over boosting. So I tore the head off yall know, not fun. It blew on the #4 cylinder witch I find unusual. But thank god for having factory parts.