Hey Mike, you said those numbers were with a "stock" longblock, does that also mean that the heads are as they came from the factory?
The reason why I am asking is that I believe I read on your website that it was stated that one of the weak points on this engine was the heads when applying boost.
I guess what I am asking is, did you reinforce the heads in any way with better gaskets? I am still learning about the 4.0L, but I know on the 5.0L there was some type of head gasket that could be used to prevent them from blowing and I think it was called something like Wire-Locs or something like that and you actually had to have them embedded into the head and allowed you to run boost without too many worries of blowing the head gaskets.
Also, do you take the motor apart at some point and see what (if any) damage there is? I would be real interested in finding out where the weak points on these motors are. I heard the connecting rods are forged and the crank sounds healthy, but am wondering about things like pistons and bearings and head integrity.
I am curious as to how much these little monsters will take? I do appreciate the time and effort you are taking in pioneering this motor to new heights!