Here is a place I always use for block and head work:
United Service Automotive Inc
659 W Colfax St
Palatine, IL 60067
847-991-6242
Good prices and great work.
Last time I used them they ported, polished, decked, 5-angle valve job, stainless steel valves, new seals and springs, and also flow benched a pair of V-6 heads for $350.
I know many who have used their services and never had a problem with price or quality of work.