Just playing with numbers with those heads and thin gasket I think Dcr is 7:74943 could be wrong cannot figure the rest out ,I only have an iPad to play with trying to find a program like Nm uses.
Just getting back to this..... another 50-55 hour work week on the road.....
I am getting lower numbers.... like DCR of 7.4 at sea level with the .028" thick head gaskets, and either Indy or Edelbrock Performer heads with closed chambers. DCR becomes 6.8 at your elevation; this is about .7 better than stock, which is about all you will do without going into the block and replacing pistons. (Or milling those small chambered heads even more..... which I would not do, with an eye to the future.) This is with the smallest VooDoo cam installed with 2 degrees added advance. You're nowhere near to detonation-land.... unless you muck up the ignition timing a lot! (I have had it happen in a race....detonated some forged pistons into meltdown with a DCR in the high 5's LOL!)
For your numerical work, be aware that the 360 pistons like that are about .100-.110" 'in the hole' (below deck), and have a dish of about 8-9 cc's that adds to the volume and reduces SCR and DCR.
Nice part is that you will get a LOT more top end breathing and extend the RPM range up, if you match it with intake and carb. Then you'll want headers....
