Z28LS1camaroguy

iTrader: (3)

yes its official i hate my 2.73s, its holding me back major the car wants to go but the gears wont let it take off like a bat outta hell. my tuner after i got my tune up and all that done said my 2.73s were really holding my car back and he recommended that i step up to 3.73s, how much of a difference does it make really, and after i get enough money i hope to get a fuddle racing 3500 stall to go with my gears. who here can tell me about there step up from 2.73s to 3.73s???? i want the whole awsome story and all the tire smoking details, does it make you slam back in your seat??

Z28LS1camaroguy

iTrader: (3)

come on someone...................

2kta--89formula

iTrader: (2)

I can't tell you about 3.73's but I am pleased with my 3.42's. It made a huge difference off the line and also at a 45-65 kickdown roll. Traction wasn't an issue with the 2.73's, but now it's my main issue I need to get sorted out before doing any more mods to up the power level. If you plan on running drag radials then 3.73's with a 3500 stall will work great for you if you can get it to hook up. It all comes down to traction. Hope that helps some......

Z28LS1camaroguy

iTrader: (3)

so do you think i would be just as happy with 3.42s, this is my daily driver and i plan on taking it to the track one of these days but dont want to get killed on gas mileage. i heard a stall is the best bet, shouldnt you have good gears first in order for the stall to work effectively?? i mean dont they build torque converters to match your mods and gears??

2kta--89formula

iTrader: (2)

If you are interested in a stall give the manufacturer a call and they'll be able to point you towards the best one for your application. I would like to get a fuddle racing 3400 2.1 STR, but with the traction problems I'm having I think it would make it a lot worse off the line. Granted, I don't run drag radials--had a couple bad experiences in the rain and it's my daily driver. I am quite pleased with the 3.42's. When my 10 bolt goes and I get a 12 bolt I will again get the 3.42's. It's a good compromise. I do have a dead spot between 80-100 from a roll <bottom of third>, but I can live with that as I don't roll race starting off that high. First gear is great, second is good for around town and highway, third runs up to 125-128ish, so running into OD isn't an issue. I'd go gears first <if you plan on doing them anyway> then getting the converter to match. My mileage didn't decrease as much as expected, I still get around 21mpg if I behave, and it drops down to 18 when I'm beating on it. I lost about 2mpg roughly. RPM's are roughly 2500 cruising at 80mph.

2000SLPZ28

if i was you, i would go with 3.42, instead of 3.73. expeacely when its your everyday driver. just me going from a 2.73 to a 3.42, it cut about 50 miles of gas out of a full tank. like before i changed i would average about 320-330, but now, im lucky to get 300. 3.73 is a great gear for six speeds, but i wouldnt go with it on a A4. but its your car.

Z28LS1camaroguy

iTrader: (3)

how much of a difference did the 3.42s make for you, i heard they arent to far off the 3.73s anyways. i am just tired of stomping the gas and the car not jetting off like my friends with the 3.42s, plus im more of a dead stop race guy start off the line or low mile per hour roll thats where you seperate the men from the boys. 2.73s suck and need to go if i go with the 3.42s what stall should i get??? a 3500 stall with whatever STR fuddle says.

Urban Legend

iTrader: (5)

Go for the 3.73s if you are going to go through the hassle of changing gears.

y2k_ta

iTrader: (80)

Agreed. Only do the gear swap if you're serious about it. After my 2.73 to 3.73 gear install and tune, my car gets 17 mpg on the highway. I wanted the gears, and the gas mileage wasn't a concern of mine. But then again I don't drive my 'bird everyday either.

After my gear install and hand held tuning, I cut 2 tenths off my e.t. After proper tuning, I've managed to cut a total of over 4 tenths off now.

SeeYaSucker

3.73s all they way, you won't regreat it, I have 4.10s with my A3.

Z28LS1camaroguy

iTrader: (3)

well i am wanting to make my car a weekend car hopefully but our new house isnt built yet and no place to park it since my mom gets the garage and the harley gets the other spot, but i want gears so badly and since i only pay car payments it shouldnt matter about gas prices anyways. how about traction for those with torque converters and 3.73s i know the guy above said he was having traction problems with his 3.42s and torque converter.

Z28LS1camaroguy

iTrader: (3)

also is a 10 bolt 7.5" or 8.5" b/c there is a seller on ebay Kennedyoffroad and has great prices along with 100% feedback rating. anyone buy through him???

MattIROC

iTrader: (19)

7.5" ring gear

TXZ28LS1

iTrader: (5)

i dont care much for gas mileage..but how would 4.10 be in an A4?

Roadhouse

iTrader: (8)

I'd just put a 4.10 rear end in my SS and it drives alot better with it but, I also have two more forward gears so I don't know what the A4 would do with that gear behind it.

Z28LS1camaroguy

iTrader: (3)

im gonna go with the 3.73s and then a converter, also what all is needed in the gear swap i know the gears, ring and pinion, crush sleeve, shims and seals, and a new TA girdle cover. is that all that is needed??? and rear end fluid of course.

Z28LS1camaroguy

iTrader: (3)

and are these gears for a 2 series carrier??? http://cgi.ebay.com/ebaymotors/10-BO...8889QQtcZphoto

Mike2000Z28

I'm just get my car back from the dyno, I can't wait to see the difference the converter will make.

Z28LS1camaroguy

iTrader: (3)

tell me how it went when you get the car back.

SeeYaSucker

Get an Installation kit with your ring and pinion, it will have everything you need to have it installed, except the Girdle, its seperate and well worth it IMO.