Advice on stroker build with cracked cylinder

That think I follow you for the most part. So the DCM would probably be higher than 8:1 then with the 51010's and a zeroed deck?
With the following:
  1. Zero decked 51010 pistons
  2. .039" Felpro 1008 head gasket
  3. 65 cc chambers (63 cc chamber Edelbrocks with the valve area worked and adding 2 cc's, NOT the 65 cc Edelbrock with the open chamber design)
  4. Add 1 cc or so for volume down to the top ring
  5. then SCR is 11.5
With the 312 solid cam installed with the intake centerline at 108 degrees, then DCR comes out to 8.1. Note that the DCR computation is dependent to some degree to the valve lash and the effective angle at which the valve closes, so ' in the low 8's ' is the better answer. But low 8's for AL heads and an effective quench gap should be quite tunable to run without detonation on pump fuel. You can't be lazy or ignorant on the tuning.

Set aside some $$ for more rear tires.