I'm running a 416 at 10.4 compression with a .039
compressed HG... this is iron W-2 heads... the cam
is what counts... I'm running a 260/270 on a 105 LSA
installed at 105.. I run it on the street on 87 octane
with NO/NONE spark ping.. thats with a 180 stat... I am
sure that with 10.6 on 93 octane you wont have a issue IF
you have the right cam... my engine made 590hp on 93 octane
with 40 degrees of timing on the dyno.. I run it at
38 degrees all the time on the street.. and will at the
track
EDIT
My pistons are at zero deck... but I have a 22cc dish
to give the compression.. if your pistons come up with
that compression at zero deck I really dont think you
will have any issue... I always try to get .040 quench