Final Engine Compression Ratio?

Was the 1" down actually 1.000" or very close? And was it with the piston moved 1.000" down from the TDC position, or with the flat area moved 1.000" from the deck? Just shooting for best accuracy.

If so, I get a net dome volume of +4 cc at an effective deck height of 0.000" per your 1" down measurement (as I first interpreted what you did). The pure cylindrical volume with no net dome or eyebrow works out to 209.0 cc for a 4.030" cylinder.

With that, plus a compressed head gasket thickness of .051", 3.58" stroke, 4.03" bore, 4.18" gasket hole, and an added 1 cc for the crevice, I get 10.75 static CR.

If you moved the flat of the piston down 1.000" from the deck (.990" actual movement from TDC), then I get 10.46 SCR.

For DCR, the IVC at the .050" lift angle is not what is used. The IVC angle is put in as either the advertised duration IVC, or an IVC based on the .050" lift plus a number like 15 to 20 degrees. (Comp's method IIRC). Using the 292 advertised, an LSA of 110 and an ICL of 106.5, I get a DCR of 7.9. If I use the .050" IVC + 15 degrees, I get a DCR of 8.31. So that brackets your DCR range.

I have not bothered to work it out at any elevation as you look to be near sea leve.