what kinda times/MPH are these things running stock?

 

from 14.9's to 16.1 stock at around 88mph (fast enough to go back to the future).

 

Just raced one with catback exhaust and they are O.K. or my truck is quicker than I thought. I would definatley say no better than 15.5. I would think they would respond very well to power adders being as they already have the LQ9 6.0L and a 4L65 with AWD. The potential is definately there.

 

Mine was stock for only about an hour so I couldnt tell you what I ran stock

 

That sounds sweet!!! How do you like your Procharger?? Did you have any tuning issues?? Your setup is what I was reffering to when I said "potential" . That thing must be bad! What are you running?? What kind of RWHP are you getting??

 

my cousin has one, he did a 14.8 stock

 

tell me about the gain you got from your fans & blow off valve

 

That is very quick. He must have gotten a ringer

 

They are pretty decent times for such a big truck. I have neve seen one do a sub 15 sec run.

 

I took a SS Silverado to Norwalk Ohio last summer and made two passes. Best was 15.218 worst was 15.226 MPH best 88.51 worst 88.43. It was a black one, I heard there "faster". My new one is red with a little help on the Induction side, can't wait for summer to get here.
Kurt