I got a 00 Z-28a4 w/ 2.73s. SLP LM and SLP LID. Planning on some LTs and ORY in very near future. Wondering if i should change the gears, and if so, to what ratio? By doing this will i lose throttle response and streetibility???

 

I say keep the 2.73's. They are strong gears, good gas milage, and are easier to 'hook' on. Do a torque converter if anything, but you would lose some streetability (loose feel)

 

anybody else.....? Thanks for ur .02 tho, im leaning towards just keeping them.

 

there was an article last month in super chevy where some of the top guys in ls1 f bodies said 3:73s in an a4 an 4:10s in m6 but they said to remember your rear isnt the toughest. The article was called ls1 do's and don'ts I think it was a good article.

 

Converter before gears is the way most people go. If I was auto, I would get converter before gears

Make sure to get a tranny cooler though

 

absolutely, other wise bye bye tranny!

 

yah i went from 13.3 to 12.7 with just a converter swap with my 2.73's so id just keep the gears for a while

 

Why not get better gears and converter at the same time? Aftermarket gears arent exactly expensive, I'd say its a good mod for the cost. I just picked up a set of 3.73s myself, quite a step over my current 2.73s.

 

i was thinking 3.23s not 3.73s

 

Do at least 3.42, skip the 3.23's.

 

I did 3.42's $150 for REAL GM gears (good deal?) brand spanking new.
$99 for a slp zexel torsen pull (good idea)
$99 for a deluxe ratech install kit
$xxx for install by a good mechanic so the shiz don't whine, break etc.
(can be expensive for someone who knows his shiz)
reluctor ring $15 if you don't have ASR(i did), btw.

Gears are a pretty penny DONE RIGHT. Of course you can get some cheap stuff
and put a cheap gear in, but dont cry when it whines after a few track events.

If you don't do alot of city driving you won't notice a converter past say 40mph. If you do alot of city driving(0-35) you will notice the converter being loose esp with a 2.73.

mpg will suck big ballz in city driving mode.

tci ssf3500 is a good choice if you are going to stay internal stock. If you go cam in the short future get a 3800-4000 stall fo sho.

btw when you do the TCI SSF3500 or verter , get a BIG *** cooler, biggest you can fit, get a transgo shift kit too. and tuning.

 

3.73s and a stall are a must for an A4 LS1.I had 2.73s and 3.42s,now i'm getting 3.73s,it's the only way to go for gears.3.23s would be a waste of money IMO

 

I do ALOT of city driving. More city driving then highway driving.

 

id get a stall first and see how you like it.i love my stall.i will get gears eventually though.

 

i want to do all the bolt ons. Ported T/B, ASP U/D pulley, Lts and ORY. Then ill worry about gears/Tc.

 

Go with a good converter like a yank or a midwest and get 3.73's when your ready. Screw 3.23's

 

Aight

 

Street driveability is greatly improved with lower gears. 90% of my driving is in town; I ditched my 2.73s for 3.42s and love 'em. Definitely tougher to hook, though.