A 440 with stealth heads 10 deg retainers/locks, P3690933 springs, xe274 comp cam, Holley SD intake, source H beam rods, FT Zero deck Ross pistons, Q-850 Carb, stock forged crank, Ati Dampner. New HD stamped rockers with custom moly push rods. Ya all think I will get 440 hp?

I think you will come real close or make it. A little clean up on the heads - pocket port - will help. Getting compression in the low/mid 10's will help... if you can setup for zero deck piston height, you will get ideal .040" quench with a common gasket. The quench will help prevent detonation at the higher CR.