We study the large N operator spectrum of the (1,0) superconformal chiral s
ix-dimensional theory with E-8 global symmetry. This spectrum is dual to th
e Kaluza-Klein spectrum of supergravity on AdS(7) x S-4/Z(2) with a ten-dim
ensional E-8 theory at its singular locus. We identify those operators in s
hort multiplets of OSp(6, 2\2), whose dimensions are exact for any N. We al
so discuss more general issues concerning AdS/CFT duality on orbifold super
gravity backgrounds.