What type of 440 is this? (Pictures)

Is there any way to get the crank type, approx compression and type of heads from all those numerological deciferitizings?

It appears to have a steel crank - internal balance right?
Harmonical balancer is thin and does not have weight offset.

How do I get head type and rated compression? .

Thanks for all the good info folks.

Yea we bought the cam n lifters 6- 8 years ago, at the time, did not put much thought into it.

Looks like the head PN is on the intake runner - a normal 400 / 440 head for '74. The heads have red springs with a black coil spring damper inside. Those normal?