Get the 4.10's and you will be in the high 11's.

When you get the rear replaced, please post what failed inside. It is unlikely that you simply cracked the casing without a gear or broken output shaft inside causing something to get in the teeth and that is what moved internals apart causing the cracked housing.

My guess is that you broke the output shaft and a piece of it was caught in the gears.

What tires were you running? Wrinkle wall or runnning less air in a taller wall tire absorbs the shock on a prepped track.

Good luck with the repair.

 

I'm SCREWED! dyno-tech wants 1549 for the Stage 2 Rear End BUT!!!!!!

thats only with a core exchange of the stock rear end! so its like 3500.00 because my rears GONE!

 

This is no good. I was under the impression that Chevy was just being overly conservative with the TM, not because there was an actual problem with the transmission.

The TM pisses me off so much, especially in the lower gears. I was planning on getting rid of it ASAP, but these kind of occurrences may change my mind.

Completely stock, I had some wheel hop at the track on Friday. It wasn't violent like it is in a FWD drive car, but I didn't expect it from the Corvette.

 

The '05 C6 differentials have had two minor revisions within 1 year, with the second being the latest assembly one can purchase from GM/Getrag. Since the '05 model year is still in effect and the used replacement core market is nearly non-existant, the cost of '05 C6 differentials cores are VERY expensive to purchase when coming from GM/Getrag as new. (over $2000 each) Since GM/Getrag is having all these breakage issues lately, that only drives the cost up even more unfortunately... The '06 differentials are certainly a major step in the right direction regarding case strength, but they will not directly bolt-in to a '05 chassis/trans. w/out some modifications and/or component swapping.

With that said~ we have been watching the C6 differential issue unfold over time, which started for us about 7 months ago. (the C6 differential development) Even early on, we could see where the negative issues would be with the '05 differential and proactively produced the C6 Differential strut to counteract that negative breakage issue. The main cause of all the C6 differential fracturing lately lies with the way the C6 differential is poorly mounted to the chassis. We've got a couple more HD driveline components in testing now that will correct that issue- like our differential struts do, once and for all also.

We hope you find a used core that can get you by if you need to, but if you need our assistance, just drop me a line and I'll be glad to talk with you a bit more in detail than even what Jenny did.


Best Wishes,
Phil- DTE

 

What tires were you running?

 

I seriously doubt this diff broke due to its mounting. Something broke inside to cause the internals to shift cracking the case.

 

Stock Tires with 30 PSi

 

We do this sort of thing for a living so the information we pass along here for others comes from OUR *direct*, hands-on experience doing this everyday and there is more to this mounting issue than you might think. We've already covered this same sort of ground over 3 years ago, except it was with the C5 application and what many thought "couldn't be", back then, have in fact seen what we've been saying all along was accurate now that they see it for themselves. It's human nature to doubt what they don't understand..

Folks may use the information as they wish, it's for their own benefit....


Best Regards,
DTE

 

email sent concerning parts needed for C6.


Larry, 118 mph trap speed is very good. The E.T. would depend on your 60' time among other things but I have seen time slips as low as 11.5x with a 118 mph trap speed.

Take a look at this post for some E.T's near your trap speed.

 

You guys need to find and option to run ET streets.
Phil

 

That is an awesome trap speed for a nearly stock C6. With a 1.6-1.7 60ft you are looking at 11.6. Ask me how I know

 

Damn. $3500.00. And thats if your transmission is OK. If its not, then unfortunately it will be more.

Hearing about your misfortune makes me sick, cause I know it could have been any one of us, myself included.

 

Torque management is an urban myth on C6's. There is so little TM intervention, especially on six speed cars, that it makes no difference.

The owner admitted that he was getting bad axle hop. This happens on bone stock cars with no mods if conditions are not right. Blaming TM is not getting to the point of the real problem.

 

JUST bolt ons and NOS!!! What were the bolt-on's?

 

What did you dyno at with these mods? Sorry for all the questions and posts - my mind is not working well tonight

 

I would have to agree with DTE on the mounting issue,and I have been working on these diffs for 10+ years...

 

I STILL know where you can get one with no core charge for $2200. In fact its a NEW unit not rebuilt!!!!

 

My Camaro SS Had just A Hypertech Chip, A New Intake lid,Fasttoys Ramair Kit,SLP Y-Pipe & A Exhuast Cutout on the rear oh & NOS


I Ran 12.7 without NOS
& 12.3 With only a 85 Shot & I Didn't even know how to use it. It Was my first time Sparying So i sprayed out of 2nd gear & I Was on Stock Bald tires.


befor i got rid of it & bought a bottle heater & New Tires & Jacked the shot to 150 & Man that thing was fast!



MY 60' with the Vette Was a 2.0 i'm not sure what C6's are doing in the 60'?.


& I Never had the Vette Dynoed yet.

 

what should have been my trap speed?

 

If it was never dyno'd, how did they tune it (LS2 edit)?