[jjgi5150]

Hi all,

So...for those with the referenced drivetrain, a few questions:

1. If you modded your vehicle to well above stock HP numbers, did you do anything to upgrade the drivetrain?
2. If you did not upgrade the drivetrain, have you suffered mechanical problems as a result of your increased power?
3. If so, what did you damage and what type of driving caused it (drags, road course, auto-x)?

I am curious about this because so many modders mention their awesome power upgrades....but not much said about matching drivetrain upgrades. It makes me wonder if the GM torque management program we suffer through with a stock tune is way too conservative...or if folks have just been lucky and not suffered any damage.


No judgements rendered...just curious for some real world info.



JJ

[Vulcan1]

No drivetrain upgrades and no issues. Drive it like I stole it!!

[Can'tHave2MuchHP]

The drivetrain setup on these is fairly beefy and well built. The TR6060 with an upgraded clutch will handle 1000+ HP +/- for street/occasional track purposes. Now if repeated hard drag launches on slicks are mixed in, expect to eventually snap a half shaft or damage the diff. The trans for the most part if taken care of is not going to be your worry. I'd put the stock clutch up to about 800 before slippage may start to occur and of course the wear will be drastically higher so in a few thousand miles it will need to be upgraded to a McLeod/Mantic etc.

The biggest factor hands down comes down to one word: usage. Driven only to get groceries, it could probably handle 2000 HP til hell freezes over. Regularly abused on sticky tires at the drag strip with a poor driver who just drops the clutch and bangs gears improperly, expect issues to come up.

[SJFGTO]

Really good question and an issue that should not be over looked. I picked up 80 HP and 100 foot pounds of torque with my mods, pretty modest compared to many other builds. But I have not had any problems, no breakages, noises, etc despite allot of spirited driving. It is an important issue to consider for more sizable builds for sure.

[litle88]

Originally Posted by Can'tHave2MuchHP

The drivetrain setup on these is fairly beefy and well built. The TR6060 with an upgraded clutch will handle 1000+ HP +/- for street/occasional track purposes. Now if repeated hard drag launches on slicks are mixed in, expect to eventually snap a half shaft or damage the diff. The trans for the most part if taken care of is not going to be your worry. I'd put the stock clutch up to about 800 before slippage may start to occur and of course the wear will be drastically higher so in a few thousand miles it will need to be upgraded to a McLeod/Mantic etc.

The biggest factor hands down comes down to one word: usage. Driven only to get groceries, it could probably handle 2000 HP til hell freezes over. Regularly abused on sticky tires at the drag strip with a poor driver who just drops the clutch and bangs gears improperly, expect issues to come up.

What’s the difference between the stock 6th gen Ss diff and the Zl1 diff?
How would you rate it compared to a 5th gen Zl1 diff?

Thanks

[Gunkk]

Originally Posted by litle88

What’s the difference between the stock 6th gen Ss diff and the Zl1 diff?

SS (non-1LE) and ZL1 Verts use G80 - DIFFERENTIAL, LOCKING REAR FULLY AUTOMATIC limited slip.

SS 1LE and ZL1 coupes use G96 - DIFFERENTIAL, ELECTRONIC LIMITED SLIP.

And FWIW, the SS verts do not get diff coolers, but ZL1 verts do.

[Fraxum]

Originally Posted by litle88

What’s the difference between the stock 6th gen Ss diff and the Zl1 diff?
How would you rate it compared to a 5th gen Zl1 diff?

Thanks

Same durability level (per a well known performance shop owner) but the ZL1 diff is 40 pounds heavier (per Chevy engineering) and has EDiff capability which is really cool for covering off camber curves and bouncing off curbing on a race track. (Did I say that right?)

Some 9 second SSes are running the stock diff, but the SS and the lightened SS are much lighter than a stock Z.

The only Chevy upgrade is the 5th gen ZL1 grave digger diff which definitely is stronger and even heavier. It can handle BIG power.