Hi everyone,

Took my car to the strip for the first time ever this past weekend, conditions were exceptional, and the track was well prepared ...

The first two runs were fantastic ... I basically rolled out of the clutch ... and then opened her up... My third run though, I gave her some gas (about 1500 - 1800 rpms) and dumped the clutch .... well let's just say that the rear diff. did not appreciate that, and decided to committe suicide So now I am in the market to replace the rear end ... so I am looking for input from Corvette guys with alot more experience in this matter than I have!

My car is a 2005 C6 - Z51 Convertable.
I have replaced the stock airbox with an SLP Black Wing.
replaced the stock headers with longtube headers, highflow cats, X-Pipe, but left the stock mufflers and exits intact ... I kinda like the stock sound of the car!
I had also changed the stock rear diff. gear from a 3.42 to a 3.73...

The car is out of warrenty (93,000 km's) ... so I am totally flexible on how to repair my self impossed damage!

I'm sure their are a few other guys out there like me, and I would love to know what you did, and what you would do differently, if anything, if you were in that situation again.

I know that there were a number of issues with the '05 diff.'s and guys were getting them repaired under warranty ... has GM strengthend the rear end's on the '06's and '07's? Should I look at replacing with GM parts? Or are there any good aftermarket parts I should be looking at?

Help!!!!

Thanks guys!

Mark

 

The 06 diff will not mount up to the 05 tranny. I has a different casing, stronger yes, but also has a different bolt pattern due to the A6 shifter in the newer models. The gears are not the weak point in our diff, its the case. DTE makes a diff brace, but again that's not really giving you a great piece of mind. I don't know of a company that makes a bullet proof rear for a transaxle. I wish it was as easy as throwing a 12 bolt or a 9" rear in though.

 

Thank you for you input, my car is an M6 ... would that make a difference to the bolt pattern, or does it not matter between automatic and manual trans between model years?

 

Mine is an m6 as well. The 06 and up Vettes all have the same bolt pattern regardless of transmission type. GM did that so they would only have to worry about one rear end casing instead of 2 for autos and sticks.

 

So sorry.

We have the same year and set-up, though I went with a 3.9. Rockland Standard did the work. Despite the hardened case if I had to do it over again, I would have stayed with the 3.42. I still may flip back. I would talk to Rockland Standard. Also, Callaway is buiding a strong 3.42, they did a post it on the Forum a few weeks ago. You might give them a shout too.

Best of luck.

 

FYI~ We build Callaway Cars' HD driveline products..

 

http://www.dynotech-eng.com/dte_c6_diff.htm

http://www.dynotech-eng.com/dte_06_ls2-m6_c6_diff.htm

http://www.dynotech-eng.com/dte_06_z06_c6_diff.htm

 

That sux! Sorry to hear!

That was one of the reasons I traded my '05 for an '06. Since the winter is almost upon us you may wait and see if a complete tranny/diff combo from an '06 or '07 shows up for sale here. Or if that doesn't work for you I would recommend DynoTech Engineering as I've read good things about them over the last few years.

Best of luck!

 

Thank you very much for your link ... I was actually looking on your site earlier today!

How much would it cost to ship upto the Toronto area in Canada?

Who should I speak to at your company to arrange the sale and shipping?

Thanks,

Mark

 

Hey Miaugi, good to hear from you! Hope you had a good time at the LMC show earlier this summer ... ya, it was not a fun experience, but I did learn from it! Check out my link to the Canadian Section to see all the video! http://forums.corvetteforum.com/show...1522232&page=5

 

There are a couple of different options~

You can call to talk with Phil, the owner or Jenny, his wife- as they both can answer any questions you might have and/or assist you in making a decision on what differential model is best for you and your Corvette.

Also, Davenport Motorsports in Calgary is our Canadian Dealer if you wish to deal with them direct.

 

I looked at Davenport Motorsports website, they do not list any Differencial - Transmission components, except for a short throw shifter ... would they be carrying inventory? Or would they need to source from you, then ship it out to Toronto.

Calgary to Toronto would be 3 extra day's of shipping, plus the time it takes to get from your location to their location in Calgary.

You guys need an Ontario, or better yet a GTA (Greater Toronto Area) dealer!

Well I'll talk with my mechanic, and either he or I will give you guys a call to talk about what is necessary.

Mark

 

No problem, as both options are available. They carry our products, so you might want to just give them a call.

 

Thanks for all of your help, much appreciated!

 

CDN_Wolf_eh....sorry about the damage. It appears DTE offers some options far superior to factory. I'm bookmarking their site for future reference. I not having any problems but you know what they say...if you play with fire.....

All the best for a speedy recovery.

 

Thanks Wayne,

It's been tough these last few day's going to visit my baby in the hospital, I mean the shop! My Grand Prix GTP just isn't the same!

I'm thinking of going with the "DTE Stage 2 Street Performer Plus" with the upgraded components ... but I'm curious about the "Micro-Polish" procedure ... what is the "stock' procedure ... and what does the "Micro-Polish" add to performance, and/or durability of the internal components?

Anyone out there have any experience with these parts/components? Knowledge about the "Micro-Polish" ... is it worth the expense?

 

After you get your upgraded DTE Diff, you shoud consider getting 2 way adjustable shocks or coilovers to dial out your wheel hop or any diff case you put in will not survive too long.

I put R&L hardened output shafts in mine and installed a carbon fiber driveshaft from Lou G on my 06 vert. Before the coilovers I would get wheel hop when launching and shifting from 1st to 2nd. Now I can launch at any speed with no wheel hop The wheel hop is what cracked your case, and you can hear it in the video.

 

Reduced parasitic drag, cooler ring & pinion operation due to reduced contact friction, reduced lubricant operating temperatures, quieter gear operation, increased wear life of gear set are just some of the benefits... Very popular with road racers and high stress-load applications.

 

Coilovers eh? Hmmmm ... will have to consider that for sure!

I just figured that future trips to the strip would involve a non-wheel-hop launches , as I did in the first two trips down the strip, by just rolling out of the clutch ...

What exactly do the coilovers do? How are they installed? Recommended brand? Expected cost?

Thanks for your help!

 

Thanks you very much for the info!

OK .. Jim from "Colalillo Automotive Services" in Mississagua, has been trying to make contact with you guys, and order the parts ... could you please call him at 905-273-6122 (Fax: 905-273-7583)

Ship To:
COLALILLO Automotive Services Ltd.
626 Burnhamthorpe Rd. W.
Mississauga, ON, Canada
L5B 2C4


I would like to get the:

DTE Stage 2 Street Performer Plus
Turn-key installation M6/M12 and includes lubricants: $2099
Micro-polished all internal components including gear set upgrade

My car is a 2005 C6 Z51

Mark

- You can PM me for my contact details, and payment details.