Decoding and building suggestions please!

[Big69C20 Toy]

Ok guys i went and bought that 350. I can sorta distinguish the casting but the last digits are blurred. the first are 397 but the rest i cant make out well, seems like it might be some zeros or something but the casting blew. Anyways the head number on these is 462624 and i measured a few of the valves. They were what looked like 1.9/1.5.
The block is from general inspection about 4.040" bore and the pistons in it are slightly dished. The guy i bought it all from said he thinsk the motor was bored 40 over and that he thinks it has a steel crank.
A few of the valves on one head are burned and the motor has been sitting for like 15 years. It came out of a 70's step-van or something like that i was told.

This will be my new long term project/learning toy as i've never rebuilt am motor. The rockers look good and he gave me the old pushrods. I'll have to take off the timing cover and oil pan to see more stuff. Thanks for the help guys, i'll keep ya'll posted. Ohh FYI i paid 80 for it all.

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69 Custom 20, 396BB,Longbed fleetside.
New Oak Bed With SS strips... damn nice.

Edelbrock performer RPM-O, Edelbrock 750Carb, Headers, HEI, 2 40" glasspacks.
Stereo: Classic-style tape deck/radio, 2 6x9 Cerwin Vega's in doors, 2 10" Neo subs under seats, 1 900 Watt amp.

SN= Ares220