rear diff
Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
rear diff
Was wondering how hard is it to change a diff. I have the 2:73 and want to go up to a 3:42. I don't have a lift and trying to find someone in Utah to do it for less than $2500 is impossible. Thanks in advance.
Burning Brakes
Joined: Sep 2007
Posts: 980
Likes: 18
From: Columbia, SC
No special tools required, it just slides right out. If you want me to type up some instructons, PM me as I most lkely won't continue to search out this thread.
Instructor
Joined: Jan 2007
Posts: 116
Likes: 0
From: Howell Michigan
You'd be surprised how simple it is. I just did my clutch and pulled the diff to have different gears installed. It will be time consuming, but very straght forward. And the tranny doesn't have to come out to do it. Took me about 3 hours to get to a point that I could pull the diff. I was on the floor in my garage with hand tools.
No special tools required, it just slides right out. If you want me to type up some instructons, PM me as I most lkely won't continue to search out this thread.
No special tools required, it just slides right out. If you want me to type up some instructons, PM me as I most lkely won't continue to search out this thread.
You would be surprised but a lift would help.
Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
You'd be surprised how simple it is. I just did my clutch and pulled the diff to have different gears installed. It will be time consuming, but very straght forward. And the tranny doesn't have to come out to do it. Took me about 3 hours to get to a point that I could pull the diff. I was on the floor in my garage with hand tools.
No special tools required, it just slides right out. If you want me to type up some instructons, PM me as I most lkely won't continue to search out this thread.
No special tools required, it just slides right out. If you want me to type up some instructons, PM me as I most lkely won't continue to search out this thread.
Race Director
Joined: Aug 2003
Posts: 16,270
Likes: 30
From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-‘18-'19
NCM Sinkhole Donor
What are your plans to get the PCM re-programmed once the new rear end is in? Aren't you going to get a tune?
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
That is a really high estimate so you'll be good!
Try to find one used off a Z06 or MN6 and you'll save even more it should only cost about $600 to have it swapped out!
Thanks,Matt
Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
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Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
Le Mans Master
Joined: Feb 2004
Posts: 8,629
Likes: 16
From: York PA
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
brit2001; here's a swap tutorial:
http://mikemercury.home.att.net/342.htm
the dealership won't be able to use their GM Tech Tool II because it won't allow the selection of non-factory ratios for the A4. All it will allow is the selection of the 2.73 and 3.15 ratios on an A4.
If a dealer does this for the 3.42, then they will have to use an aftermarket non-GM tuner setup.
http://mikemercury.home.att.net/342.htm
If a dealer does this for the 3.42, then they will have to use an aftermarket non-GM tuner setup.
Pro
Joined: Sep 2006
Posts: 571
Likes: 0
From: Milwaukee Wi
All you need is a heater and a garage. I just pulled the diff and trans out of mine. Went out it was -6 with windchill around -20. It was nice and toasty 50-60 in the garage. If you were closer you could use part of my garage.
Safety Car
Joined: Jun 2006
Posts: 4,088
Likes: 1
From: Pennsylvania
ls1 tech has some good do it yourself instructions. I watched it done twice at a "pro shop" took them less than 4 hours.
And, for that kind of money,I would take a long weekend and drive someplace to get one slapped in. Maybe a guy at the local chevy dealer would do it on the side, or help you. I would email a local club and ask if they knew any local mechanics. It is worth doing.
And, for that kind of money,I would take a long weekend and drive someplace to get one slapped in. Maybe a guy at the local chevy dealer would do it on the side, or help you. I would email a local club and ask if they knew any local mechanics. It is worth doing.
Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
Thanks for all the info. I do have a few buddies that are good mechanics so I may try and take it on myself. I have thought about a road trip to california to get it done. I have family in L.A. and Sacromento but don't know any shops to call.