3.42 gears worth swapping on a A4 with 2.73?
07-02-2007, 04:33 PM
#1
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3.42 gears worth swapping on a A4 with 2.73? I have a auto with stock 2.73 gears I want to know if its worth the hassle to swap to a 3.42 gear? I just wanted a little bit quicker accelartion for the street. what else would need to be changed? speed sensor etc so the tach and odometer are not out of wack.
07-02-2007, 04:54 PM
#4
Originally Posted by fatboyq
I have a auto with stock 2.73 gears I want to know if its worth the hassle to swap to a 3.42 gear? I just wanted a little bit quicker accelartion for the street. what else would need to be changed? speed sensor etc so the tach and odometer are not out of wack.
I did same to my z28 that i had, it completely woke it up!
07-02-2007, 05:07 PM
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3:42 is a def good upgrade, or 3:73's , 4:10's are bit too much if you have to drive it much for daily use, especially on the highway gas mileage will go to **** with 4:10's, so i say do it!
07-02-2007, 05:08 PM
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yup...I went from 2.73's to 3.42's...It definately woke the car up. I would recommend it. Gas mileage did take a slight drop..i went from being able to get like 28mpg on the highway...to about 25 or so..Not a huge drop...but with gas prices as high as they are today its worth considering.
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07-02-2007, 05:09 PM
#8
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I did 3.42 from 2.73 and a stall at the same time - got a deal on a complete low mileage rear from an M6 car. If just doing gears only I'd go w/3.73.
07-02-2007, 05:12 PM
#9
I did this exact swap. It really gave the car a lot of extra snap. MPG in town actually increased (with a light foot). Mileage on the highway suffered a lot, about 4 mpg. I do SO much driving on the highway (20-30k yearly), I should have kept the 2.73s. If you drive normally, go for it - the 3.42s really are noticeable and are a good middle ground to still be livable on the freeway.
07-02-2007, 06:24 PM
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is a good improvement,they wont fit your carrier with out a spacer,
or buy the thicker 2 series 342s aftermarket. they might whine though.
you also need a tune for the spedo-hand held will work+firm up the shifts.
look for a used one.
or buy the thicker 2 series 342s aftermarket. they might whine though.
you also need a tune for the spedo-hand held will work+firm up the shifts.
look for a used one.
07-02-2007, 06:40 PM
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You will need a flash tune... Find a guy in your area and since it is such a small tune should only be about $10. I went from 3.23 to 3.43 (had too) and i can feel the difference. 3.73 are great but mine is a daily drive and personally i think that you shouldnt do 4.10's
07-02-2007, 09:58 PM
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I wouldn't do it until you get a stall. Chances are, you'll be happy enough with the stall change that the gears won't be an issue.
Many guys that do gears still end up wanting a bigger stall. But many guys that do a bigger stall end up being fine with keeping the stock gears.
Many guys that do gears still end up wanting a bigger stall. But many guys that do a bigger stall end up being fine with keeping the stock gears.
07-03-2007, 12:11 AM
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go for it.. get a 3.42 or 3.73. I run 3.73's and still get 24mpg on the highway. A stall would be a ton better imo. I had 2.73's with a 3600 stall and it was insanely quick on the street but would still cruise on the highway and get 28mpg. Only gripe I have a 2.73's on an A4 is that the car shifts just as you go through the traps in the 1/4 mile and a stall will feel a bit on the loose side which is only really noticeable if you have loud exhaust. Either way though the gears would make a good improvement over 2.73 gears.
07-03-2007, 06:35 AM
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Great mod. My old car went from 2:73 ot 3:42 and big difference! From experience I would do this again. I did lose about 5 MPG on the hwy. And gas being high you might to consider this!
07-03-2007, 07:01 AM
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Originally Posted by sixvi6-camaro
go for it.. get a 3.42 or 3.73. I run 3.73's and still get 24mpg on the highway. A stall would be a ton better imo. I had 2.73's with a 3600 stall and it was insanely quick on the street but would still cruise on the highway and get 28mpg. Only gripe I have a 2.73's on an A4 is that the car shifts just as you go through the traps in the 1/4 mile and a stall will feel a bit on the loose side which is only really noticeable if you have loud exhaust. Either way though the gears would make a good improvement over 2.73 gears.
07-03-2007, 02:03 PM
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used 3.42s or new are pretty damn cheap right?
I don't like the idea of loosing 5mpg though, that would suck. especially with the gas prices at 3.70 for 93 octane
I don't like the idea of loosing 5mpg though, that would suck. especially with the gas prices at 3.70 for 93 octane
