1996 Silverado 1500 4X4, Vortec 350, 4L60E tranny, extended cab, non posi, K&N filter, air box removed, rigged cold air setup, removed air silencer, and capped off, cats removed and straight pipes installed with O2 sims.
I have not weighed it yet, but is a high 15, low 16 possible?

 

Mid-low 16's.

 

I forgot, I have the descreened and ported MAF ends off of my Camaro on there now.

 

all i know is years ago i had a 96 vortec 4x4 had hypertech,volant intake,catback,pulleys,Jba headers,My buddy showed up in a new 300miles 5.3 2k demo,same truck as mine,we launched and stayed even until 60MPH and he walked away.Welp it wasnt long before my 96 was gone and had a new 00,so low to mid 16s for your vortec

 

I'll 2nd the mid low 16s.

Unless you have weight reduction or something else you didn't list.

My truck with just a muffler, HPP3 and air filter only went 15.9 or so and it is very similar to your truck but with the 5.3L.

 

Thats cool, I will be getting some headers and duel exaust for it as well as a TB riser plate, K&N cold air, an Eaton posi. I already have a set of LT1 electric fans, that I am going to put on it, all I need is a thermostatic controller for it. I am thinking of putting in a shift kit for it, do you guys know what is the best one. Sorry all the dumb questions, all my experience is with Camaros.

 

i wouldnt bother with the throttle body riser plate, waste of money, spend that money on geetin your tb ported and polished or do it yourself. i hear transgo is the most detailed and best.

 

Yeah, I plan on doing it myself.