It's a 63 390 block. I think the "H" was the service replacment for the "E" PI 390 solid lifter block. I'll have to double check that. The "H" block is a hyd lifter block. When used as a PI replacement with solid cam the lifter galleys were blocked. It was kind of a dual purpose block. The C1-C rods are 390 rods also. Your correct on the crank info you found.

I'm half Swedish myself and welcome!

G.