Originally Posted by WhiteDiamond

Is anyone using the new LT1 clutch set up behind the LS7? Actually, behind the LS3 as well? If so, what do you think about it? Is the engagement nice?

Is the clutch behind the LT4 different? Looking to change the clutch on my Z06 for something a bit less "marbles in a can" that can perform.

Originally Posted by ttx350z

Well, I finally have enough traffic use with the LT1-S to give my initial impression

My clutch was installed by Horsepower Addicts in Delaware. Yes, I drove my Z06 from ND to DE (1,700 miles one way) for a clutch install. I'll also have the monster billet release bearing support. Why you ask? Might as well swap the factory plastic support that is known to melt and cause a slave failure while a new slave was going in. $80 to prevent a slave failure, I'll take it anyday and the part is reusable so you can swap to another slave in the future. My car also has a Tick master cylinder that I installed a 8~ months ago.

After it was installed, I drove to Cornwall, New York. Then Cornwall, NY back to ND. I'm currently still in Wisconsin but I had to drive through Chicagos stop and go traffic.

Well initial impression:

Pedal feel - The same to me. Nothing jumped out of the ordinary to report. I could sit in New York City's, Chicago's, or L.A.'s traffic all day and not get a tired leg.

Engagment was a touch more aggressive then what I could recall with my stock. Nothing crazy but just a slight difference.

Noise - Very very very slight rattle at idle in neutral with clutch engage. Like i have to turn the radio off and actively try to listen to the clutch. For reference, my old TT 350z with a JWT twin disk sounded like rocks in a coffee can.

Holding power - holds 540whp fine. My old clutch was on it's last leg. I would get a long pedal after a single 60-120 pull. The new clutch took that and pedal stayed the same. I know it's only one pull but it's all I can do right now. I'll have to wait for an autocross or something later.

Originally Posted by ttx350z

I have the LT1 clutch on my Z06.

Originally Posted by Mike's LS3

The nickname "Marbles in the can" is not the clutch. It's the noise of transmission gear slack when leaving from a stop. I've had the "marbles in the can" on my 08 corvette since new. 67k miles later with a new clutch, two manual transmission fluid changes and still " marbles in the can" . It is transmission related and normal.

Originally Posted by schpenxel

No, not necessarily. Gear rollover noise is caused by the clutch friction disc not having springs to cushion the pulsing that happens each time a spark plug fires. It's more noticeable at lower RPM's since there's more time between each boom. Some aftermarket clutches use solid friction discs, some don't.

Unstrapped/unspring floater plates will rattle and make some noise when the clutch is disengaged. This is absolutely 100% the clutch, not the transmission. This is what a lot of people know as the "marbles in a can" noise.

Mantic uses sprung floaters. Monster uses strapped floaters. Both accomplish the same thing and stop the floater plate(s) from moving around while the clutch is disengaged.

I'm sure others use strapped or sprung floaters, those are just two I'm familiar with.

Originally Posted by Mike's LS3

I stand corrected. When researching clutches, I did read about unstrapped or unspring floaters increasing the "marbles in the can" noise with dual disc clutches. Fortunately, I have a Mantic clutch because I do not need any more "marbles in the my can".

Originally Posted by schpenxel

Mantic has a nice clutch for sure. I started off with one of those but made a mistake on the install, and made the mistake of buying a used clutch. I learned a lot from that one.

I got my twin disc monster in today and no noises at all from the clutch. It's exactly like stock. Very happy with how quiet it is.

(although my failing power steering pump was making plenty of noise! haha)

Originally Posted by schpenxel

Mantic has a nice clutch for sure. I started off with one of those but made a mistake on the install, and made the mistake of buying a used clutch. I learned a lot from that one.

I got my twin disc monster in today and no noises at all from the clutch. It's exactly like stock. Very happy with how quiet it is.

(although my failing power steering pump was making plenty of noise! haha)

Originally Posted by Buddy A

After some miles would you consider doing a comparison between the Mantic and Monster? Those 2 appear to be the top 2 choices for street driving