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Old 04-02-2013, 08:18 PM   #15

DrkPhx's Avatar
Drives: 2013 Triple Black ZL1 / 2006 TB SS
Join Date: Feb 2011
Location: MN
Posts: 2,072
Originally Posted by Batmanntexas View Post
So, is the verdict that the stock clutch in the ZL1 can handle 700RWHP? If that's the case, I'd be looking at that as a replacement for my 2012 SS clutch. Thanks!!
Browse the CTS-V forums. They use the same clutch and it seems the general consensus is 650 rwhp is the point where is starts slipping. Of course mileage and driving style play a role in determining clutch life. I have a friend with an 09 CTS-V with 562 rwhp and 44K miles and his clutch is starting to slip.

Here is some additional information I found about the ZL1 clutch:

The present TR-6060-equipped Camaro with the naturally aspirated LS3 has a single-disc clutch that's good to around 500 hp or so (about a 20 percent cushion over the stock engine's output). Our inside sources tell us the supercharged LSA engine used in the Caddy CTS-V, as well as the forthcoming ZL1 Camaro, has or will have a dual-disc clutch with about 20 percent more holding power (about 700hp capacity).

From the Corvette forum:

We use the clutch pedal return spring on the stock C6 clutch and on ZR1/LS9 clutch upgrades as well. We also have a similar product designed for the 2010-2013 Camaro and use it with the stock clutch and the twin disk ZR1/LS9 clutch.

The clutch pedal return spring is NOT the same as the over-center spring you already have on the Corvette pedal. That spring is not designed to return the pedal to the released position.

FYI - the ZL1 Camaro doesn't need one. GM put a clutch return spring on the ZL1 from the factory (in addition to the over-center spring). Nice to see different companies coming up with the same solution. 8-)
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Old 04-03-2013, 10:41 AM   #16
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good info!
C6Z06 400ci, twin gen 2 promod 88's,th400, Alky car
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Old 04-04-2013, 06:55 PM   #17

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Drives: 2012 Camaro SS (2SS)
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Location: Sanford, NC
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DrkPhx -- Thanks for the info! I'll definitely check out the CTS-V forums, but it sounds like it'll handle what I need.
734RWHP/634RWTQ on 93 @ 10psi
806/676 on E85 @ 10psi

COTW 9/8/14
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