I just picked up an 84' GL which = overheated the last time it was driven. It has been parked for about a = year. That's all I know from the PO. It seems to crank well and sound generally = fairly healthy, but it won't fire. It has good spark, and fuel delivery = at the injectors looks good. A compression test showed only 30 psi on 2 cylinders, I'm assuming this is a result of the overheating. I = have a few questions;

1) What is the = typical damage from overheating? ( rings, valves?? ) (The heads still hold coolant)

2) Is it worth = investigating futher into this engine or should it go to the scrap heap?