OK, can you move the piston back up to TDC, and then measure the CC's down in the block at that point? I can measure the distance in thousandths from the block deck to the top of the piston flat. I cannot CC it as the dome will be above the deck at that point. Also, only part of the piston is flat, less than 1/2 of it, the rest is above the deck. That will complete the data needed to figure this out. We can crosscheck this to the info given in the past for the Egge pistons. I would like some clarification of how this calculation figures into the overall volume.
And yeah, I expect the SCR and DCR to be lower with this info.... the Egge pistons are the lowest compresssion height of the available 4bbl 273 pistons.