Also, DTE can install any gearset you want in your 2.73 case. They developed the rebuild procedure to do so.
Gear Swap
Thread Starter
Pro
Joined: May 2007
Posts: 635
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From: Fargo ND
Gear Swap
Swapping 2.73 to 3.42, can anyone tell me the steps of a gear swap? ive never done one before
Ive heard you only need gears from some, others have said full differential, someone shine some light on the subject please.
Ive heard you only need gears from some, others have said full differential, someone shine some light on the subject please.
Le Mans Master
Joined: Mar 2002
Posts: 5,300
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From: Mississauga, Ontario Corvettes were built to be driven...not trailered
St Jude Donor '07-'08-'09
David, if you have 2.73 gears now, your "pumpkin" (the gear casing) is too small to accommodate the 3.42's. Guy's who have the 3.15 gears from the factory have the larger casing and in that case, all you have to do is swap the gears inside. But 2.73 guys have to get a whole new pumpkin assembly.
PS: I had a shop install mine and all I remember is my whole rear end assembly lying on the floor (you basically have to drop the entire rear assembly) While you're there, you might want to give some consideration to a higher stall converter
PS: I had a shop install mine and all I remember is my whole rear end assembly lying on the floor (you basically have to drop the entire rear assembly) While you're there, you might want to give some consideration to a higher stall converter
Last edited by 4GTABODT; Oct 5, 2007 at 06:19 AM.
Team Owner
Joined: Jul 2004
Posts: 24,652
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From: NJ
St. Jude Donor '05-'08
as stated you will need a new carrier. You can order a Z06 carrier with 3.42 gears in it from GM. Installation on the floor is a PITA, but can be done.
You will also need to change your shift points.
As a reference we charge $1695 for the parts, install and the shift point correction.
You will also need to change your shift points.
As a reference we charge $1695 for the parts, install and the shift point correction.
Team Owner
Joined: Sep 2001
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From: Lake Elsinore, CA
Melting Slicks
Joined: Mar 2005
Posts: 2,364
Likes: 1
From: Rugby North Dakota
Buy the ENTIRE pumpkin w/ the gears you want in it, then swap pumpkins - CajunDude has a GREAT rear end swap write-up on his site and here's the link: http://www.cajundude.com/differential.htm
As I understand it, only a FEW shops in the US are able to successfully swap the gears only and NOT create a whining rear end - swapping gears in the C5 pumpkin is NOT at all like swapping gears in the older rearends.
As I understand it, only a FEW shops in the US are able to successfully swap the gears only and NOT create a whining rear end - swapping gears in the C5 pumpkin is NOT at all like swapping gears in the older rearends.
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Team Owner
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From: S.W. Ohio. . . . . . NRA Life Member
Most do it though because the gear swap has the transaxle torn apart to the point where swapping to a higher stall TC adds just a few minutes of work to the carrier swap project.
Here's a link to my rear gear swap page (with links to others as well):
http://mikemercury.home.att.net/342.htm
and an inexpensive converter upgrade if interested:
http://forums.corvetteforum.com/show....php?t=1715694
.
Last edited by Mike Mercury; Oct 5, 2007 at 03:44 PM.
Melting Slicks
Joined: Mar 2005
Posts: 2,364
Likes: 1
From: Rugby North Dakota
my advice - do 'em both! mine's a daily driver and I put in 3.73's and a SS3200 stall - wouldn't have it any other way, except maybe I should have gone w/ a SS3600 stall -
Also, Mike Mercury has a good write up also for the T/C swap as I recall - I think the link is in his post above.
Also, Mike Mercury has a good write up also for the T/C swap as I recall - I think the link is in his post above.
