I've been building, blue printing and drag racing Mopar V8 since the early 1970, none of them have ever been correct on the factory deck heights, none of them
Do you have the eagle 440 rods or the .100 longer Eagle hemi replacement rods?
I've seen after market Hi Po rods vary .0090 on the center to center lengths
As far as Hemiroid motors, don't ask about the many problems getting them blue printed to dead nuts on factory specs on them rascals