Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

Spec Clutch install Pics, Video and weight of parts!

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Old 07-06-2011, 09:07 AM
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Default Spec Clutch install Pics, Video and weight of parts!

So I did a little reading on here on installing the LS7 clutch and I was pretty sold on the idea. Then I started thinking want about a good clutch that's even lighter then the LS7 even with a light weight flywheel.. So I went with the Spec clutch with the light weight flywheel and lighter billet aluminum pressure plate. I was trying to really free up some spun-weight, because people on here keep saying how heavy the factory dual mass clutch is. We have a shipping scale at work, so right when I got the clutch I checked the weight including all the bolts they sent for the flywheel and pressure plate, it was only 33.4 pounds! Then I removed the stock flywheel and I do a lot of diesel work, so I felt like I was removing a flywheel from a manual Dodge Cumming! In fact I truly be think it's even heavier! I put all the stock components on the scale and it was 79.8 pounds! That's a weight savings of almost 50 pounds! I also took some videos on how much easier the car revs up. The clutch feels Awesome! I also did the C6 slave, polyurethane trans and diff mounts.

Sorry give the first video a minute, because I was at the shop my self that night so I had to walk over to the car.



After clutch install. The biggest change was how fast the engine would spin back down!




Old 07-06-2011, 11:19 AM
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Do you find yourself rev matching gears more often while driving around town now?
Old 07-06-2011, 11:27 AM
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using the c-6 release bearing and hydraulic, was there a need for a spacer under the bearing assembly? and did the line match up?
Old 07-06-2011, 11:44 AM
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How is the drive-ability now?
Old 07-06-2011, 11:45 AM
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Originally Posted by aperacing
using the c-6 release bearing and hydraulic, was there a need for a spacer under the bearing assembly? and did the line match up?
No didn't need the spacer, but when I did match them up to make sure the C6 slave would come as close to the pressure plate as the stock one with the spacer I did end up using one of the shims that come with the LS1 stage 3 clutches to bring it up just a little. I'm guessing the LS7 pressure plate comes a little more back then the Spec?
Old 07-06-2011, 11:47 AM
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Originally Posted by Ekshail
How is the drive-ability now?
PERFECT! Car revs more like a Z06 now and I'm getting almost 1 mile per gallon better on HWY driving!

Last edited by LS6BlackCTS-V; 07-06-2011 at 11:48 AM. Reason: spelling
Old 07-06-2011, 11:51 AM
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Originally Posted by BudRacing
Do you find yourself rev matching gears more often while driving around town now?
No not really....If I'm upstanding you question correctly...
Old 07-06-2011, 11:52 AM
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Hope your SPEC works out better than mine and a few others on here. I think I'm going to turn mine into a work chair base or something lol Thats about all its good for.
Old 07-06-2011, 12:01 PM
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Originally Posted by raven154
Hope your SPEC works out better than mine and a few others on here. I think I'm going to turn mine into a work chair base or something lol Thats about all its good for.
Yea I hope so! The only reason I went to them is because it worked so well on my stroked LT1 with 300 hit. Put 25,000 miles on the clutch and did countless 300 shot 5,500 rpm 1.4 60 foot hole shots and never had a problem. The one I had on the car was even underrated for the 1,050 foot pounds of toque I was pushing out that old 1995 beater! What happened with yours??
Old 07-06-2011, 02:18 PM
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Well the specs were locking out at high RPM, this happened to at least three of us, and even after swapping them for a new one. I couldnt shift at all at high RPM, town driving slow no problem, try to bang some gears, not happening.

They claimed hydrolic issue but after finally going with another clutch all of our shifting issues disappeared....

Good luck
Old 07-06-2011, 03:31 PM
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^^^^What he said!!!!
Old 07-06-2011, 08:13 PM
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what spec is this, 3+?
Old 07-06-2011, 08:34 PM
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Um, how long did it take you? I'll be doing this probably next friday
Old 07-06-2011, 09:24 PM
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I hear ya...I had the Monster level 2 with 18lb flywheel installed and it was night and day. Getting rid of the stock clutch and flywheel is a great move.
Old 07-06-2011, 09:39 PM
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i had a stage 3+ on another vehicle and it was great.

then i tried it in my V and well.... it didnt end well. Hopefully it works well for you. Lord knows i tried many different ways to make it work and no dice.
Old 07-06-2011, 10:52 PM
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Originally Posted by raven154
Hope your SPEC works out better than mine and a few others on here. I think I'm going to turn mine into a work chair base or something lol Thats about all its good for.
+1

... I will never buy Spec again
Old 07-06-2011, 10:55 PM
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Originally Posted by blk04V
+1

... I will never buy Spec again
That's a shame. They've been great to the Miata community.

Shedding all that weight from the rotating assembly of the motor has to feel great on the street



-meaty
Old 07-06-2011, 11:11 PM
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Originally Posted by meatyCTS-V
That's a shame. They've been great to the Miata community.

Shedding all that weight from the rotating assembly of the motor has to feel great on the street



-meaty
lol a miata weighs almost half what a V does and 95% of them make no power.
Old 07-06-2011, 11:22 PM
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Originally Posted by itsslow98
lol a miata weighs almost half what a V does and 95% of them make no power.
A lot of the road racing guys use them, when they are going for hardcore weight reduction. So, even though they don't have any real power, they certainly beat the living **** out of them. Lots of guys on Miataturbo.net use 'em. High and low boost applications.

I'm using a Stage 2 ACT setup on my blown miata, and it's been a damned good clutch setup, and hasn't let me down yet. Autocrossing or street driving.

-meaty
Old 07-06-2011, 11:47 PM
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They might be good in a miata but they don't work for **** in the V.


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