What I did for the piston measurement was. Put the piston in until the dome was level with the deck. Measured the distance from flat portion of the piston to deck. (.349) I used the 4.28 bore and .349 to get a theoretical flat top volume. With the piston in the same place I CCed it. I subtracted the cc fill from the theoretical volume. After your question it guess I should have added the .021 to the .349.
Last edited by 500ciBee; 03/03/1801:21 PM.
1970 Super Bee prostreet. 383, SMR 727, Dana 60 4:88. Building a 512 low deck.