something just doesnt feel *right*

[93GTDIN]

Well as some of you may know from my other posts I recently put 500 miles on my new motor. I punched it and it went fast... or so I thought. My buddy who was in the car with me said he wasn't impressed, he thought a heads cam intake 5.0 should do better. I was just sick and tired of babying my ride around town. The more I've been punching it the more I realize it really should have more power. It's definitely not slow, but I think it was faster with the blower. (I had a 10 lbs intercooled procharger with bone stock EVERYTHING) So now I'm a bit confused. Since this motor is brand new I have nothing to compare it against. With stock convertible gears (2.73's or 3.08's, i'm not sure) how fast should it really be going? Also, what things can I check that would cause a loss in power. It idles fine with a tad bit of a surge (nothing terrible). Doesnt overheat. Am I just feeling the convertible automatic blues?