2001 2500 1-60 time

I know a siverado 2500 is not really meant for speed, but i just sold my v-6 firebird for it and my truck seems alot faster than my car was, and i got up to 55 mph in first gear! so can anyone tell me the 0-60 time in a 2001 silverado 2500 6.0 liter gas?

i will dig out my slips but stock my 2000 HD2500 reg cab ran 17.10 at 81ish
with a K&N FIPK2, JET chip 3" dual flows and no tailgate i ran 15.99 i could have done better if it werent for all the tire spin