Oh and the is def rust running down the side of the block from the head gasket.

#6 exhaust maninfod casting is full of oil

Number 6 injector harness is missing... Thinkin that's the oil issue! Not firing... Wires are just sitting there... No clip

HOLY Shi" - You sure were sold a bill of goods. PILE OF CRAP that is.
Sounds like it is time to rebuild it right this time. This is just one of the many reasons that I do my own engine work. AND I am very thankful that I have the ability to build engines. The knowledge didn't come easy or cheap.
Are you sure you got the engines you paid for?

Who knows! I am thinking about replacing injector and harness and putting it back together to finish the season and build a new one in the winter? could damage have been done to that cylinder?

Anybody near Cleveland wanna assist in a engine build this winter ?!? I have built a couple 5.0 motors.... Def doing it myself. Thinkin a 540ci for about 600hp at the fly wheel.

If it has been running dry the damage was there when you brought it home. IF the injector was firing and washed the cylinder than that would not be good.

110-135 is a pretty big jump too. 10% is the norm. That's more than that.

The cylinder wasn't firing... Injector wasn't hooked up, it must have been lubricating though because it was pushing oil out of the cylinder. I pulled the heads the cylinders looks new with the cross hatching and the heads and block look great using a straight edge. Going to try and put it back together with a new injector and see how it runs... If it gets me through the season.... That's all I want!

I would think if it has oil in the cylinder then you have a broke or broke rings.Its a lot of work but if you could pull the motor and drop the pan and replace that one piston and rings you might make it through the season.

Chris