373 gears good?

[clg82]

Would 3.73 gears be good for my A4 trans am? I already have the A4 performance axle with the 3.23 . (door code GU5) Would it be worth me getting the 3.73 since i already have the 3.23? What gains will I see and will I "feel" a difference?

[Anthracis]

You'll feel a slight difference. But I would swap out the whole rear for a ford 9".

[mrr23]

yes. i have the 3.73 gears in my car. i swapped from a 3.23.

[silverz28camaro]

i went from the 10 bolt 2.73 gear to a 12 bolt moser 3.73 gear

2.73 2.002 60 8.4 1/8 23.30mpg highway 70mph
3.73 1.88 60 8.1 1/8 20.78mpg highway 65mph

if you are worried about mph, go 65 your car will get better gas mileage, numbers don't lie

[Jays00ss]

You'll feel a slight difference. But I would swap out the whole rear for a ford 9".

I second this, Save your money and get a 9" or 12 bolt (preferably a 9") for the $500 (gears, rebuild kit, oil, gasket, labor) you will spend on the gear swap, you'll be 1/4 of the way to a new and 10X better rearend. I wish I would have done this.
I am now saving for the 9".

[Too Fast]

i went from the 10 bolt 2.73 gear to a 12 bolt moser 3.73 gear

2.73 2.002 60 8.4 1/8 23.30mpg highway 70mph
3.73 1.88 60 8.1 1/8 20.78mpg highway 65mph

if you are worried about mph, go 65 your car will get better gas mileage, numbers don't lie

Your gas MPG seem awful low. My '98 with 2.73 would get over 27 MPG, but the car had only a lid. You must have a cam or more? With our '00 6 spd, I checked my 12.99 1/4 run, it showed an 8.44 1/8th. I got 27.6 and 28.4 MPG @ 75 or so MPH with AC on when needed this past May, all I have is headers and a lid.
I always wanted to swap some 3.73s in my '98, I think that would be a great gear. Unlike others, both my Trans Ams have never had any rear diff problems. I am glad GM spent the $$$ on the engine rather than the differential.

[Heartbreak1]

Quit your bitchin. lol
I have the 3.23 rear and im barely getting 19 mpg city.

[TwiSSter418]

I went from 3.23 to 3.73 and really didn't feel much of a difference. Maybe I was expecting too much, but I wasn't impressed with the improvement.

[camarojunky74]

with 373's you can expect a 8.10 1/8 mile time rather than an average stock 8.90

i think this a huge improvment,
quarter mile times wont be as derrastic of an imrpovment.

[Ed Blown Vert]

Get a converter

[slims00ls1z28]

9"- 4.10-3500 Stall It will feel like a whole different car. Can't say gas mileage is all that hot but it's still better than my brothers stock 16 mpg SUV so I won't complain especially highway. Combined so far even with stall gear cam untuned and all mods I still manage roughly 20-22 mpg depending on how much I play. I can watch the hand drop if I mash it though.

[98T/Aformula]

I went from 3.23 to 3.73 and really didn't feel much of a difference. Maybe I was expecting too much, but I wasn't impressed with the improvement.

X2, I am going back to the stock 3.23s and just putting in a stall....All my top end went away and low end did not change much....