Help with 340 compression + cam change

midnight340 said
Just found this from "70aarcuda" on this site back in 2011:
"pistons were changed...compression height changed from 70 340 with a 1.84 to about 72 340 with a 1.74....."
Also I've read several times that the compression height change was 0.100". Anyone know for sure?

mn9stheham, this might be more accurate than what I'd stated above. Does this make more sense, or not much difference?
Click to expand...
Thart hangs together exactly with the data sheet I found and linked, the numbers I ran, and matches up with what was going on with all the SBM when the emissions stuff came along in the early 70's. Leads to a cranking compression the 125-135-ish range for such a cam.