Just got my new 500 cid low deck stroker engine of the dyno making 593HP and 610 ft-lbs of torque. I was expecting a bit more? Did I have an unrealistic goal hoping for 650HP based on the following compnents of all new parts?

71 block 0,40 over
440 Source stroker kit (4.150" stroke/6.760" rod)
CNC ported eddy heads, milled to 10,75:1 in Compression (Hughes Racing)
CNC ported eddy victor singel plane intake (Hughes Racing)
Holley 850 ultra carb.
1,6:1 roller rockers (Hughes Racing)
Huges Hydrualic Roller Camshaft (Hughes Racing)
Intake Valve Lift 1.6 .576"
Exhaust Valve Lift 1.6 .576"
Intake Duration at .050" 252°
Exhaust Duration at .050" 258°

Any thoughts on the set up and dyno results is much apriciated.