Help identifying an engine I picked up

[AtomicTrent]

I bought a garage full of parts.. including several blocks/heads.

I have one that I am interested in knowing more about.
Stamped in the pad above the water pump: J440
Side of block casting: 3698330-440-6
Vin pad: 3(a backwards C?)330386
Heads: 3769902

Help?

[FJ5_440]

That is a 1973 440.  It was originally equipped with a cast crank.
The 902 heads are something I don't know too much about, but I think they are similar to the 906s.