Parting out fresh 360

You probably worked this out already, but My KB 107s came in at .011 below deck on my LA 360. That's 2.3cc. Adding 5+8.8+62 that is a total of 78.1cc. At 4.03 bore, that makes a swept of 748.3------- and so (748.3 +78.1)/78.1=10.58 scr.
A cam with an ICA of 68* makes 165psi@137VP, pretty well on the edge for iron heads and pump gas at sealevel.
At 900ft and 70*, you are down at 157psi@128VP.
The Q would be .039+.011=.050 with closed chamber heads,a little loose but still doable.
An ICA of 68/70 Could be found on
a 280/286/108 cam,or a 276/284/110 or a 272/278/112, or a 270/274/114
Or many other similarly sized cams.
Of course these are all fairly large for the street and won't be particularly good on gas,lol. Well hang on the 114LSA wouldn't be that bad

But if you are looking to build something smaller, then yes 10.6 would be too much,for iron heads.

Now with aluminum heads, and still at 10.6Scr ....... you could run a cam down to about 58* ICA, and make monster torque, ferocious VP, and stupid-good fuel economy.
That could be a 252/260/114 cam with only 28* of overlap, it could make 182psi@164VP; that is low rpm performance like a 440Magnum. But the 252 cam is done pretty early, I'm guessing it might powerpeak around 4800, and with an auto would want to be shifted around 5600 on the 1-2.
Or it could be a 260/268/110 with same 58* ICA, now this cam will powerpeak at maybe 5100 and want the 1-2 shift pretty close to 6000. Bottomend will be same as 252 cam, but 44* overlap it will pull pretty good. I like it.

Of course 164VP is stupid lots of tire-shredding torque so we could give some of that up , and give up some fuel econmy, and maybe choose a middle of the road cam with an ICA of say 64*, and still at 10.6Scr I get, wait for it
268/276/110, and psi of 172 and VP of 148; now yer talking; enough torque to have fun with, an extended rpm powerband and still reasonable fuel economy. I like this one too. Aluminums are awesome.
As a matter of fact, I would run those closed chamber aluminums with an .028 gasket or down to .034Q, and that would punch things back up. With an Scr of 10.9 now that 268 cam could make 178@153VP whooeee.
Hey wait, I ran that....... on 87E10 with full timing.