Just ran across this site today. It looks like it's got a ton of info in it.

A little about me: I've had a '02 Avalanche Z-71 for a little over 2 years and have made a LOT of mods to it. I've always been a gearhead and am starting to think about taking a few more steps in an attempt to make my big slug run. I know that I'm never going to get a 6000# truck to run like a Camaro but there has to be a lot of room for improvement.

My current mods include:
3" body lift
17x9 wheels
33 12.50 Procomp tires
Edelbrock shorty headers
FM 50 single in with duals
80 mm TB
Predator
4.56 gears
GM tranny cooler
K&N drop in
Cowl hood
Addco syay bars
Pioneer AVIC-N2 DVD/NAV
1000 x 1 Memphis amp
50x4 Kenwood amp
2 12" Infinity Kappa Perfect sub
Pioneer TSA door speakers
chrome door handles, bezels, tailgate handle, and step plates
tinted windows
ect, ect, ect....

I'm looking to drop about a second off of my quarter mile times. I think my first step will be beefing up the tranny with a shift kit, servo, and a converter. I'll try to do my research and not ask a lot of stupid questions.

Here's a couple of pics of the AV:

 

welcome to the site, there is alot of info to find here, don't be scared to ask

 

Thanks ZEUS, I'm on 5 Avalanche forums and we're having a GTG in May at Huntsville Dragway. The last one we had at a drag strip I was pretty disapointed in my performance. The AV was a DOG off the line, my best run was a 17.0 at 81. At that time I still had 3.73 gears with the 33" tires (and a bad bank 1 O2 sensor). I have since gone to 4.56 gears. I figure that I could run a 16.9 as it sits but my goal is to be in the 15's. I know that doesn't sound very fast but it would make me happy to do with a vehicle as heavy as a bus.

I may bite the bullet and finance a supercharger (don't want to go into debt ) but I think the tranny/converter would be the best place to start, I have a few months to git-er-done.

 

welcome aboard!

you dont happen to have the 3.73's stll do ya? id deposit some funds into your supercharger account if youd like to get rid of em

 

Welcome. Nice people here. You'll like it. I've yet to read a flaming thread.

 

Yes, they are sitting in the garage in the boxes that the 4.56's came in. I would sell them very reasonably. I assume your a 2wd and just need the rear's? I have both.

Let me know if your serious.

 

Welcome to the forums!!!

 

This really is a great forum! It's got a ton of info and some really helpfull people much better than a lot I've been on.