89 4.3l problems

Put an engine in my s10 that I was told was good. I redid all the seals but the head gaskets. When I run the engine it overheats. The oil pressure is 40 at idle but even if I tap the gas it the oil pressure gauge goes off the scale. I can hear a light niose coming from the drivers side of the engine. I think all the problems are linked.

My question is when head gaskets go on 4.3l, how many of them blow out on the oil side of the gasket. Do you think my one of my heads are cracked? or is the block cracked?

Let me know if you have had this problem before and what it turned out to be. Thanks, Cory

check your oil and see what color it is. if its milky in color its probably blown.