Ok now i have another peice of information. I got a rough measurment of a 3 3/4 inch stroke (if it were to be off i think it would be a longer measurment that i got) so that would rule out a 428 if i am reading right.
The #'s on the intake are.. 5D
C5AE9425C


The #'s on the heads are.. EDC-E
6090
and then off to the side of the head #'s are.. 79 N