Is my hp/tq outputs correct?

[silvermonte]

I got my engine put on the dyno the other day. I followed an engine build from one of the Chevy mags from the internet. I cant find the article anymore but I swore their motor made over 400hp and 430tq if i remember correctly. I understand dynos will not match each other but I was a bit off from what I expected. Anyways Ill tell you the parts and let me know if there is something that I did wrong or missed something. I was looking for a strong DD motor that would get in the low 20s for mpg in a 2800# truck, I think this will do that but I would like to hear some other peoples thoughts.

350 block bored .60

Pro Comp Aluminum heads 210cc valves are 2.02 and 1.60 and I think the chambers are 58cc. The machine shop assembled them and made sure everything was good as Ive read these are hit or miss when it comes to quality

Compression is 10.1

Comp Cam CS XE268H-10
Advertised Duration: 268 int./280 exh.

Valve Lift with Factory Rocker Arm Ratio: 0.477 int./0.480 exh.
Lobe Separation (degrees): 110

Rockers arms are 1.6



Intake is Edelbrock RPM Air Gap with a Holly Ultra 650 DP

MSD street fire distributor is used for the ignition

Here are the dyno print outs