Gearset Changes in a C5
Thread Starter
Drifting
Joined: Dec 2004
Posts: 1,937
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From: Tempe Az
Gearset Changes in a C5
Someone explain to me what it takes to change the rear end gears. Do you need a totally different Diff or can you just swap in a set of gears like you can in an F-Body? I want 4.10's but not if i have to pay out the *** for it.
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From: Now in God's Country, the Big Sky, Montana!
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
You can pull out the diff yourself and save yourself around $500. I would not suggest putting the gears in the diff yourself. You need special tools and the skill to do the job. The Getrag differential is also a different animal from other rear ends. You have to set the proper tolerances or kaboom.
Thread Starter
Drifting
Joined: Dec 2004
Posts: 1,937
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From: Tempe Az
Originally Posted by Cajundude
You can pull out the diff yourself and save yourself around $500. I would not suggest putting the gears in the diff yourself. You need special tools and the skill to do the job. The Getrag differential is also a different animal from other rear ends. You have to set the proper tolerances or kaboom.
What other gearsets fit in my stock Diff? 4.10's? 3.73's?
Team Owner
Joined: Apr 2001
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From: S.W. Ohio. . . . . . NRA Life Member
I would not suggest putting the gears in the diff yourself. You need special tools and the skill to do the job. The Getrag differential is also a different animal from other rear ends. You have to set the proper tolerances or kaboom.
the rear diff (called a "carrier" on the C5) is not super easy to remove/install... so take your time and do it right the first time.
look here for more details:
http://mikemercury.home.att.net/342.htm
Race Director
Joined: Sep 2003
Posts: 13,550
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From: Now in God's Country, the Big Sky, Montana!
Cruise-In 7-8-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Depends on what series carrier you have. If you have the first series you will need to get it set up by DTE. If you have second or third you should be able to find a shop that can do it but make sure you go to a place that is familiar with the Getrag carrier. I used Mike's instructions and Dope's instructions and then between the two created my own which you can see here:
http://www.cajundude.com/differential.htm
http://www.cajundude.com/differential.htm
Melting Slicks
Joined: Jan 2003
Posts: 2,026
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From: Jacksonville, NC
WOW, now that is a writeup. Mike, yours was good but I am afraid cajundude has definitely upgraded the tutorial. GOod job. I almost feel confident I would do it myself. Defintely saving this page. Thanks,
Jim K.
Jim K.
Originally Posted by Cajundude
Depends on what series carrier you have. If you have the first series you will need to get it set up by DTE. If you have second or third you should be able to find a shop that can do it but make sure you go to a place that is familiar with the Getrag carrier. I used Mike's instructions and Dope's instructions and then between the two created my own which you can see here:
http://www.cajundude.com/differential.htm
http://www.cajundude.com/differential.htm
Melting Slicks
Joined: Jun 2001
Posts: 2,743
Likes: 3
From: Davie Florida
Originally Posted by Cajundude
Depends on what series carrier you have. If you have the first series you will need to get it set up by DTE. If you have second or third you should be able to find a shop that can do it but make sure you go to a place that is familiar with the Getrag carrier. I used Mike's instructions and Dope's instructions and then between the two created my own which you can see here:
http://www.cajundude.com/differential.htm
http://www.cajundude.com/differential.htm
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Safety Car
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From: Ocean Springs MS
Originally Posted by BlownV6
What other gearsets fit in my stock Diff? 4.10's? 3.73's?
Last edited by fdxpilot; Mar 11, 2005 at 09:41 AM.
Team Owner
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From: S.W. Ohio. . . . . . NRA Life Member
WOW, now that is a writeup. Mike, yours was good but I am afraid cajundude has definitely upgraded the tutorial
Don't even attempt to pit one forum poster against another. That's not how we do things 'round here. Dis ain't no Mustang forum
Race Director
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From: Now in God's Country, the Big Sky, Montana!
Cruise-In 7-8-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
No Mustangs! 
If it wasn't for Mike's and Dope's instuctions, I wouldn't have one made up. 
If it wasn't for Mike's and Dope's instuctions, I wouldn't have one made up.
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Originally Posted by JoshVette
Don't forget if you're redueing the gears beyond 3.15's, you also have to recalibrate the speedometer for the A4. 
The speedo is fine fine no matter wich gear you choose, it's the shift points of the trans that need to be recalibrated
If anyone is in need of a gear swap feel free to give us a buzz, we have gears in stock ready to go. 609-752-0321
Melting Slicks
Joined: Jan 2003
Posts: 2,026
Likes: 178
From: Jacksonville, NC
Oops, hope you didn't take my post the wrong way. Definitely no competition here. Cajun even admitted to using yours as well as another to accomplish his change out. I too will use any and all writeup available. Good job to both, new and old. Hey, I owned a Mustang once upon a high school year. 
Maybe I shouldn't admit that. 
Maybe I shouldn't admit that.
Originally Posted by Mike Mercury
there's no competition here amongst those of us that share our info. I even link to others pages on the same subjects.
Don't even attempt to pit one forum poster against another. That's not how we do things 'round here. Dis ain't no Mustang forum
Don't even attempt to pit one forum poster against another. That's not how we do things 'round here. Dis ain't no Mustang forum
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Don't forget if you're redueing the gears beyond 3.15's, you also have to recalibrate the speedometer for the A4
Hey, I owned a Mustang once upon a high school year. Maybe I shouldn't admit that.
The "car" has always been
(well... except for that Mustang II)
Team Owner
Joined: Jul 2004
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From: NJ
St. Jude Donor '05-'08
I watched ECS do my gear change today from stock to 4.10s and after watching everything involved I am glad that I left it to the people that have done a ton before and had a lift.
Thread Starter
Drifting
Joined: Dec 2004
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From: Tempe Az
Originally Posted by Wicked Weasel
I watched ECS do my gear change today from stock to 4.10s and after watching everything involved I am glad that I left it to the people that have done a ton before and had a lift.