Sounds like it's around the right area, depending on the weight of the vehicle... might have helped to note the intake was professionally ported
I don't give a flying **** what you think. I've seen far more bullshit on this board than I care to acknowledge; from people claiming to be somebody they're not to cars putting down 350rwhp and trapping 105.
I find it interesting that your combo is listed as GT-40P's with a 4* retarded stock cam, a ported Explorer intake, 1.7 roller rockers, and you managed about 15 crank hp less than the "stock" combo at 277rwhp on the dyno.