OK, that is what seesm odd to me.....with stock stroke, that combo works out to around 9.8 SCR in an LA block and 10.1 in a Magnum block (with no significant decking on either block), with DCR's in the low 8's for both, and the compression numbers should be in the 160ish range. With zero decking, it is up to 10.5 SCR and about 8.5 DCR; cranking pressures are still in the 170ish range.