Unreal

My ls9 clutch didn't even like wot let alone slipping. Go with a lt1 clutch if you want OEM type.

southspeed

I think I'm gonna go with a mantic because it's priced right between the lt1s twin and the triple and I know it will hold a 100 shot or a blower down the road. I like the idea of the lt1 twin but I hate to have to do it again down the road if I were to put forged pistons in it and spray 150 or 200.

lamboworld

I would love to get some recommendations for a clutch. I am currently at 575whp and I am adding a 125 shot within the next month. I am currently on the stock clutch and it holds fine. Probably because I only have 5,000 miles on my car. I do a lot of street driving, but I do take it to a few 1/2 mile and 1/4 mile events every year. I expect that I will be at about 700whp and 650wtq and I only want to buy one clutch.

I plan to use the stock clutch on a 1/2 mile event in Sept because I won't have enough time to break in the clutch before I go.

I was planning on using the Katech LS9X because of the great drivability.

southspeed

lamb it's a tough choice.

For an oem type I think its the monster lt1s twin or triple, or the ls9 twin.

The next group which are more aggressive would be the rxt, mantic 9000 twin, monster lt1sc and then the rps stuff which is really supposed to be good.

Ive read good and bad on every single clutch out I think, but these seem to get mostly good reviews.

Unreal

Only thing I disagree on with SS is the LS9. The LT1 clutches are the improved GM version of that clutch. They fixed the errors/issues with the ls9 clutch. So I see no need to recommend it.

Its like saying buy a c5z if the c6z was the same price. Why not get the newer/better one?

southspeed

I will say Ive heard some strong arguments against the ls9 by some reputable people. But guys like rpm extra are cutting great times with it. I agree that the monsters are an improved version though so kinda makes the ls9 obsolete.

lamboworld

Many of you have said that the LS9 clutch is outdated or obsolete. Can you tell me why? Sorry to be ignorant but I just don't know why.

My biggest goal is for my clutch to hold 525wtq from a dig and 650 to 700wtq from a roll. A very close second objective is for the clutch to be quiet. Lastly, I don't want an on/off clutch. My car will see around 15 1/2mile runs and maybe the same amount of 1/4 mile runs. I am referring to individual runs.

My Z06 spends the majority of it's time on the street and not at the track.

Michael_D

How much track abuse will the Mantic twin with organic disk take?? Does anyone know for sure, from personal experience? I asked for input on their organic last year, and heard crickets. Seems as if everyone in need of a new clutch just goes for the ceramic disk for drag racing.

Unreal

For an organic twin I would strongly look at the LT1 clutches. The c7s are racing the crap out of them with no issues.

The reason the ls9 is "out of date" is because of the lt1 clutch. It is a factory dual disc clutch from the c7, c7z, etc that was updated to deal with issues of the ls9, and improve performance. Has all the upsides of the ls9, with none of the downsides.

lamboworld

This is what I am curious about. What are the issues with the LS9 clutch?

Unreal

Failures, dropping pedal, disc failures.

At <600rwhp mine would just drop to floor during a 4th gear pull. I know several others that had the same problem. Swapped to a mantic and no other changes and zero issues since then.

lamboworld

That is exactly the feedback that I was looking for. Is the clutch dropping to the floor a clutch problem or a hydraulic problem?

Does the Mantic chatter or make a lot of noise at idle?

southspeed

I think we are in the same boat. Only thing is i want to launch on as much power as you want to roll on. Im stuck between mantic and lt1s because i just cant say for sure how much power i will stop at. Only thing i know for sure is i dont want a thousand horse vette lol. From what i understand noise and chatter is minimal with the mantic but its an aggressive clutch so some is expected. Heck my stocker makes noise at idle.

Unreal

Considering j changed nothing but the clutch I would say a clutch issue. Detox has same issue. So have others

My mantic is amazing. Holding 1200rwhp and drives like a dream. Zero issues

lamboworld

I bought the Monster LT1-S Triple Disc clutch today. I hope that it is good.

Thanks for the recommendations

southspeed

Post back what you think about it. I bet it's a good choice.

TRSCobra

I hold rpm's at 4500-5000 and let the clutch slip off the line while giving it more throttle as the rpm's drop. Best of 1.54 on old mickey radials and 1.53 on new hoosiers but I only got 2 passes before they kicked me out for no roll bar. It feels so wrong to slip the clutch that much and the stock one would never handle it, but the RXT still spins/chirps second and even third gear

I guess I lucked out on my clutch. I had a shop install it and they screwed up a few other things but the clutch is great after 2 years. Rattles a bit in neutral with the clutch out, and can get pretty chattery in stop and go traffic but the hinson motor mounts almost completely stopped that.

I wanted a monster but they had a 2 week build time and I needed the clutch right a way for an event I had already registered for, so I went with the RXT and billet flywheel.

0Anthony @ LGMotorsports

I haven't had any issues, nor have our customers had issues with the Centerforce DYAD clutch setup. Of course you never want to drag your foot on the clutch all the time but you can slip it like the stock one and not have it throw a fit.

Clutch will handle 1300 ft-lbs with the standard disk configuration and up to 1800 with a more aggressive disk compound

We have seen a few failures with the LS9 setups and do not like using them to much in anything with some power.

rpmextra

Only because the op wants a clutch he can slip..... I have to disagree with you Anthony. The dyad can hold a dump truck but it wont slip like he is asking for.

0Anthony @ LGMotorsports

Are you talking of a "slipper" clutch they would use in drag racing? If so, yeah it won't do that but I sure wouldn't daily drive a clutch like that either.

That being said if the DYAD is broken in right, I don't think it drives much different than a stock clutch.....at least not to me it doesn't.

you could also install a flow control valve too.... http://tiltonracing.com/product/flow-control-valve/

Again, not sure I would use that on a daily.