I just dyno'd mine Thursday... Here's the combo:
440 +.040, stroked to 496 with a 440source 4.15 kit
10.44:1 compression, 91 octane pump gas
Holley 1000HP, 84/88 w/o rear p.v.
MP M1 single plane intake
.597/.607 257°/259° @.050 sold flat tappet
Eddie RPM, unported, port machining transitions smoothed/gasket matched
2 1/8"/3.5" TTI headers
MP distributor, 30° total
Result: 609.1HP at 5700, 647.7ft.lb at 4500
My build is very similar to yours:
440+.060,decked .020,stroked to 500 or so,440source 4.150 flat top kit
11.00:1, 93 octane pump gas
Hughes Engines Inc. Eddie RPM 84cc prepped heads (same work as yours)
Hughes victor 440 deep port matched intake
Hughes flat tappet solid cam, 618/626 256°/260° @.050 installed @ 104°
Hughes rocker shafts & 1.6 roller rockers
950 proform race carb 78/84 3.5 power valve Holley blue pump
MSD 6al, blaster 2, pro billet dizzy 8.5 super wires ,38° total timing
2 1/8" / 3 1/2" headers, x pipe,3 1/2"exhaust ,flowmasters , dumps
I would love to know what mine makes. I was guessing arround 650 or so.