5.3 into a 66 c10 - engine does not start

[mlevario99]

I am trying to start a 5.3 engine that I isntalled in a 66 truck. I have not reprogramed the computer but I do have HP Tuners to do that. Well just now I try it and it crank but it does not start, like there is no spark. The fuel pressure is fine , I tested with a gauge. I remove the spark plug wire and put the tip of a screwdriver and crank it and there is no spark from the screw driver. Do you guy have any ideas what could it be. I check the grounds and I think I have them all. I check the pink wires and they have power.

Any ideas.

Thanks