I have a 2000 camaro z28 auto trans. it has an cold air intake cat back custom tune dynoed at 290 at the weels. It dose not do well in the quarter mile found out it has highway gears.Looking for best gear with out killing it on the highway driving. I have been told 373 is it to much gear?

 

I have 3.23s and I would rather go with a higher stall converter than to switch to, say, 3.73 gears. I'd gain more with the stall than with the gears and I personally like the 3.23s for daily driving but 3.73s would give me better midrange and more fun but i'm trying to keep some semblance of gas mileage. I'm guessing you have the 2.73s? Going from those to 3.73 will give you a decent gain in the 1/4.

 

If I had it to do over again I would not have gone
from 3.23s to 3.42s. It just makes it harder to hook.
But I test drove a 2.73 car and it was weak. Get a
3.23 chunk (or just the whole rear) and call it good.
A 3.42 rear stands a good chance of having been
beat up behind a M6.

 

373s are probably the most you wanna go in an A4 with a stock size tire. Otherwise you will be shifting into overdrive in the quarter. 373s are not bad on the highway. I think that they will put you around 2500rpm at 65. Someone correct me if im wrong.

 

What makes you think that the gear ratio is responsible for poor quarter mile performance? Are you getting full traction and still running a bad ET? Correct any wheel spin issues first, and then see where your ET is. If you are still not happy, I would suggest looking at a torque converter upgrade before worrying about gears. You will see bigger gains for similar overall cost (unless you can do a gear swap yourself), and without any MPG penalty on the highway.

Very strange. I've owned two 3.23 cars and two 2.73 cars, and noticed only a minor difference in performance between the two ratios. The 3.23 car might have been 1-2 tenths quicker and 1-2mph faster.

 

i like 3.73s. excellent throttle response everywhere.

 

3.23s and a 3600ss has been a good all around setup for me, but I was lucky in that my car came with the gu5 option. I'm hopefully going to a 28" tall tire and 4.10s or 3.90s this summer. I'm probably getting too greedy with the 10 bolt but time will tell.

 

The torque from the 3.73s is definitely worth it IMO. You will raise cruising rpm about 4-500 on the interstate.

 

3:73=2500 rpm at 70mph.......1900rpm at 55mph...
I drive 40 miles daily....perfect gear for town/some highway/sotp/fun and wouldn't have it anyother way....

 

Are you running a M6 or an A4???

 

I would agree. 3.23s + 3500-4000 stall is an ideal street/strip setup, IMO.

 

3.73 is the way to go im have a 3.73 in my 2000 and its a a4

 

Haha, I hear 3.23, I hear 3.73, back and forth back and forth. This is why I'm going with 3.42s

 

Im running 3.23's with a 3300 stall and im going with 3.73's. cause i wanna drop my times and its going to pro long the life of the tranny and converter

 

You'll drop about 1 tenth off your times and won't prolong the life of the trans or converter.

3.23 to 3.73 swap isn't worth much in the way of gains once you already have a stall in the ~3500 range.

 

I'm an A4

 

373 here and love em.Especially with a small 220 585 lift cam love the torque.