Rear diff/gear question
Thread Starter
Heel & Toe
Joined: Oct 2006
Posts: 23
Likes: 0
From: St. Louis Missouri
Rear diff/gear question
I've got a 99 A4 car and was wondering what the biggest gear is that can fit in the stock diff ....i have a 2.73 in it now ....also would i have to replace the carrier or anything ??
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 179
From: S.W. Ohio. . . . . . NRA Life Member
only a handful of companies can successfully place larger ratios in your 2 series case. DTE in Indiana is one.
But check the prices for these internal gear swaps. A brand new GM 3.42 unit can be purchased for $1000. But if you want to go further beyond the 3.42 ratio, then you pretty much have to go with internal gearing changes.
But check the prices for these internal gear swaps. A brand new GM 3.42 unit can be purchased for $1000. But if you want to go further beyond the 3.42 ratio, then you pretty much have to go with internal gearing changes.
Heel & Toe
Joined: Jul 2006
Posts: 22
Likes: 0
I'm also in the same boat as far as choosing a diff gear ratio. I know that 3.42 is the standard issue for manuals and 2.73 for automatics. I would like to know the difference for manuals. First, Mike Mercury, wher can I get a new 3.42 for $1,000? Best price I have found is $1,200! Second, Slolane what kind of difference did the new diff make?
John
John
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 179
From: S.W. Ohio. . . . . . NRA Life Member
read here: http://mikemercury.home.att.net/342.htm
Every now & then a vendor will special 3.42 brand-new Getrag complete carriers for $1000 (plus shipping). Better yet, buy a low mileage 3.42 from a 6 speed C5 for $400 to 600.
Every now & then a vendor will special 3.42 brand-new Getrag complete carriers for $1000 (plus shipping). Better yet, buy a low mileage 3.42 from a 6 speed C5 for $400 to 600.
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Burning Brakes
Joined: Aug 2006
Posts: 789
Likes: 38
From: Shreveport LA
If you have 2.73 gears you can get a set of "thick" 3.73 gears that will work with your carrier. All you have to do is call whoever you are getting the gears from and tell them what size gears you have know and what size you want and they should be able to sell you what you need. It is just that simple.