C5 automatic axel difference
Thread Starter
Cruising
Joined: Aug 2024
Posts: 10
Likes: 1
C5 automatic axle difference
How big of a chance is the 2.73 vs the 3.15 for the automatics as I'm really struggling finding a 3.15 auto
on another note how much does it cost on average to upgrade to 3.42 gears? I've heard its difficult (plus I don't have a lift) so ill probably bring it to a shop and have them do it
on another note how much does it cost on average to upgrade to 3.42 gears? I've heard its difficult (plus I don't have a lift) so ill probably bring it to a shop and have them do it
Last edited by Kitzimoose; Aug 30, 2024 at 04:47 PM.
Burning Brakes
Joined: Jun 2022
Posts: 758
Likes: 366
How big of a chance is the 2.73 vs the 3.15 for the automatics as I'm really struggling finding a 3.15 auto
on another note how much does it cost on average to upgrade to 3.42 gears? I've heard its difficult (plus I don't have a lift) so ill probably bring it to a shop and have them do it
on another note how much does it cost on average to upgrade to 3.42 gears? I've heard its difficult (plus I don't have a lift) so ill probably bring it to a shop and have them do it
A 3:42 and a 2800 stall converter will wake up a stock c5 big time.
Drifting
Joined: Jul 2004
Posts: 1,692
Likes: 693
From: Pingree Grove IL
It will definitely wake the car up some. Personally, I would at least get a 3200 stall.
Cost?
1,000 for a decent converter
900-1,000 for install and tuning at a reputable shop
1,000 for a used diff.
taxes, 280
shipping on a differential can be 150
your in it 3,500 already…
Cost?
1,000 for a decent converter
900-1,000 for install and tuning at a reputable shop
1,000 for a used diff.
taxes, 280
shipping on a differential can be 150
your in it 3,500 already…
Drifting
Joined: Sep 2022
Posts: 1,795
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From: In the woods
2024 C5of the Year Finalist - Unmodified
It does make a pretty good difference, however if going through the trouble of changing it out might as well go with a 3.42. Either are readily available on ebay, and remember either one will require a tune to fix the shift points. I have been in plenty of 2.73 equipped and my 3.15 equipped feels much snappier. That being said when I get into the drivetrain I am going with a 3.42 over my 3.15.
Thread Starter
Cruising
Joined: Aug 2024
Posts: 10
Likes: 1
It does make a pretty good difference, however if going through the trouble of changing it out might as well go with a 3.42. Either are readily available on ebay, and remember either one will require a tune to fix the shift points. I have been in plenty of 2.73 equipped and my 3.15 equipped feels much snappier. That being said when I get into the drivetrain I am going with a 3.42 over my 3.15.
Drifting
Joined: Sep 2022
Posts: 1,795
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From: In the woods
2024 C5of the Year Finalist - Unmodified
That was my point. If you're going to swap anything might as well swap to a 3.42. If you're hellbent on a factory equipped 3.15 I get it. If you get a 2.73 and swap a 3.15 in it will still need a tune however. The plus is a 3.15 diff on ebay is much less than a 3.42 cost wise though shipping will still sting a bit.
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Burning Brakes
Joined: Dec 2022
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From: Nappytown MD
If you do buy a new diff, make sure it is a 3 rib! And you might find 2 different 3.42's if you are shopping around, standard 3.42 and the 3.42 SP (Shot Peened) which is what was in the Z06. The 3.42SP will have a unique GETRAG tag on it as well for the "SP"
