Can some one run a DD for me? (I think I may buy the program soon, so I can stop bothering people here) Only if you are not busy, because I am still only in the preliminary gathering info on this motor. Ok, heres what I have:

557 cid BBC---9.6:1 CR
Dart Block -- 4.500" Bore
4.357" stroke
I-Beam Rods- 6.385"
JE Flat Top Pistons
Dart Alum Heads---310cc Intake Runners, 119cc chambers, 2.25/1.88 valves
Comp Cam Magnum 305H
Weiand X-CELerator Intake
Holley 4500HP Dominator--1050cfm

I am not very good at putting performance engines together, so any help/ suggestions you could give me I would greatley appreciate. Thanks for taking the time out to do this for me,
Chris

EDIT: Are the aftermarket blocks larger than the stock GM blocks? I mean, will the two blocks both painted the same and with all the same components look the same (i.e. one not larger than the other) Thanks

Using large tube headers with open exhaust I have:
4500rpm @ 586TQ
5500rpm @ 576HP

From Engine Analyzer v3.0

HP: 668@5700
TQ: 680@4700

Using flow numbers from Darts website (could be a little lower in real life). Electric water pump and electric fan. 2 1/8 headers with open exhaust. SAE Conditions. I'm not sure you need a dominator for that engine. You might want to consider a Holley 1000 HP and have a little better throttle response when driving around town.

With Desktop Dyno 2000

HP: 570@6000
TQ: 565@4500

Once again using Dart advertised flow numbers. Large tube headers and open exhaust. I have no idea why there is such a big difference between EA and DD2k, and why there is a considerable diff between the results i got and what DEEBOO got. I have "built" engines on these simulators and EA and DD2k have came within 5-6 hp and tq of eachother.