Ok just found out my pretty 1985 coupe DeVille almost mint condition now has a blown head gasket. I did research and found out these 4100 v8 motors are known for this problem. My issue now is that I don't know what price to sell it for. I bypassed the heater core so it's going to need that. The power windows have issues with going up and down and of course the head gasket. It has 125,000 miles on it, was running great. Transmission has no problem,the body and Interior of the car is beautiful absolutely no rust. Its a good solid car it just needs those things fixed or possibly if you find a mot