blkssny

iTrader: (4)

Anyone try these clutches yet by ACT and could provide some insight?
Thanks.

Onefast V

iTrader: (3)

if you going to spend $1K buy a ls9X

vmapper

iTrader: (8)

thats exactly what i was thinking... though the LS9x is a couple more 100...

blkssny

iTrader: (4)

I used ACT in all my previous cars with good results and was
curious to see if anyone tried it on the cts v. Is the LS9X a multiple disc?

vmapper

iTrader: (8)

http://store.katechengines.com/ls9x-...ts-v-p247.aspx

Well, wait a bit, maybe someone has used ACT with the Gen I -V

Onefast V

iTrader: (3)

The ls9 is a twin disk and about 1100 from tick performance

lunarx

iTrader: (6)

I have an ACT Twin.
It's the 875 Ft-Lb version with street disks and the standard Heavy Duty pressure plates.
I don't see any reason to go with the Extreme pressure plates or Race Disks.

The ACT Twin works flawlwssly and the pedal is significantly lighter than a V2.
I don't remember what the V1 pedal was like, because I have had so many other clutches in my car.
They all had issues except for this ACT, which drives like stock but handles 7K RPM shifts, no problem.

If you want a cushy sprung-hub, heavy clutch go with the LS9 instead.
I never used an LS9 clutch, so I can't comment on how well it works.
I doubt the LS9 is rated for 875 Ft-Lb.

The only thing you might want to know is that there is some rattle (in neutral) with the ACT that goes away when you step on the clutch pedal.
I imagine the LS9 is rattle free but at the price of a heavier flywheel.

Both my other clutches Luk Gold and RPS Street Twin had rattle but they were also light weight flywheel designs.

RADEoN

iTrader: (12)

PISNUOFF broke a few LS9X clutches making 515 rwhp.

Skidmarcx

I'm running a single disc ACT and I have yet to experience any problems with it... It does chatter a little at low RPM loads, but handles high RPM shifts no problem. I know you specified a twin disc, but figured I'd chime in with my opinion that they're good quality

soulja

iTrader: (3)

Seriously? Those are Zr1 clutches that make more power than that. How did he do that?

lunarx

iTrader: (6)

The ZR1 is a much lighter car.
Also, who knows if ZR-1 guys are driving their cars that hard, considering most Vette owners just baby their cars.

Onefast V

iTrader: (3)

The ls9x holds 800+ft lbs. Also the flywheel is only 12lbs.

lunarx

iTrader: (6)

Is that an official torque rating from the company that manufactures the clutch, or just what a reseller claims?

vmapper

iTrader: (8)

Ok,
how about the modified one?
http://store.katechengines.com/ls9r-...ts-v-p248.aspx

Do you mind me asking, where did you get your ACT Twin?

Im now curious what Skydiver uses...

lunarx

iTrader: (6)

My ACT Twin was purchased and installed at RPM motors when my engine was built.

I probably would have installed an LS9 had it been available.
However, Katch did not offer the kit untill several months after I had the ACT Street Twin.
Nevertheless, the ACT Twin works so well, it's hard to ask for anything better.
I think it's more a matter of deciding between a sprung vs non-sprung hub.

blkssny

iTrader: (4)

Thanks guys, all good info to help make my decision. I'm not too happy with the pedal pressure of the monster clutch I have in now.

itsslow98

iTrader: (18)

I think there are better options like McLeod. I have read many good reviews of the katech clutches. What power level are you? Anything 500rwhp or under the ls7 clutch is a great buy.

blkssny

iTrader: (4)

I'm only at 389whp right now, but will be adding some LS3 heads and a magnacharger soon and don't want to do it twice

itsslow98

iTrader: (18)

Yea I don't blame you there, Maggie and heads you'll still be right around 500-510 with that 112 maxed out. If you have the cash RPS is probably the best twin disc for lsx cars but they are pricey.

jweymar

iTrader: (3)

I have the ACT twin, same as Lunarx, it drives like stock, revs fast, no chatter. Best clutch I have had in the car and I have had most of them.