Correct times? 0-100mph

[LS6_Silverado]

Hey guys i havent yet been able to take my truck to the strip yet but i do have hp tuners which has a timer thats acurate to 1/100th of a second.

Well i decided to go out and do 3 runs from a dead stop like i was at the strip.
I just got finished from subtracting the differences in time from when i was at 0mph and when i was at 100mph the times kinda shocked me and i dont belive them.

Here are the times all of them are from 0mph to 100mph
Run 1 13.59
Run 2 13.65
Run 3 13.67

Can these be right with my setup below? Seems kinda fast to me for having a stock tranny, 3.42 gears, stock converter, standard tires, and stock cam/heads.

You guys tell me what you think??

Thanks, Brandon