Overall overlap, or lobe center understanding?? ¿.

i gues he has a cam designed for the 350hp 327?
is it realy a 10:1compression engine or does it just have "10:1" pistons? the gears sure seem like a bad choice for this combination.
however cams with lots of overlap doesnt need to be all that bad on fuel.. i used to have a fairly mean solidroller in a previous 340 and i miss it alot it had fairly good gasmilage despite being hot enough to realy turn alot of heads on cruisenights,it was over 260degrees".050 and that adds up to a fairly big overlap nomather how you look at it..