Based on all the threads I have read out here, it seems that an overwhelming majority of folks are using the Centerforce Dual Friction clutches.

I have been using a Sachs Power Clutch with my ZZ3 motor and haven't been too impressed with it (major heat spots on the pressure plate after only 800 miles) so I just picked up the Centerforce DF.
To my surprise, when I opened the box, the orange Pressure Plate has a Centerforce sticker on it but the cover is stamped 'SACHS' and appears to be identical to the Sachs Power Clutch pressure plate I have just removed!
What's the deal here? Is Centerforce simply re-packaging Sachs clutches with their own disc and slapping some centrifugal weights on the fingers?
Seems a bit suspicious..

I want to make sure I am installing a clutch that actually works better than the one I pulled out.
Which leads me to another gripe-

Why the hell can't clutch manufacturers list any specs regarding clamping force or recommended HP and Torque limits for their products??
This whole product line seems to be a scam with unsubstantiated claims of "Up To 90% More Holding Force Over Stock" etc.
If we don't know what even the stock specs are, these claims are meaningless.
Anyone have any insight?
Anyone run into the same issues or have the same complaints?
Just trying to get a straight answer.
Thank you for your time.
Elm

 

Mcleod Industries.

 

Very happy w/centerforce df units I have 1 in all 3 of my vettes.(65,71,92) Pay close attention to the pivot ball warning, you will most likely need the adjustable pivot.

 

 

I was sure Centerforce was their own company in AZ. Here's some info.

http://www.centerforce.com/companyin...03439441617656

I'm extremely happy with the DF set-ups on four cars, one with close to 600 HP at the flywheel. No slips, chatter, or heat problems, etc.

 

MANY clutch companies are re-using the covers. Ask them if they actualy produce the pressure plate cover in-house or is it being remanufactured and see if you get a straight answer. Not a big deal as the internals are what counts here.

I run a DF with good sucess even if it is overkill. Probably would switch to the less agressive Centerforce 2 if I ever get the opportunity as my engine is low on torque and that model would be a better match up for my setup. Low torque likes a little more slip off the line. Big block guys do not have that problem so the DF is probably better for them. The aggressive friction surface works great for high HP applications where you do not desire any slip.

JMO.

-Mark.

 

 

In answer to the overwhelming use of a special brand of clutches I disagree. OEM quality is all that most applications need. Aftermarket stuff normally carries abnormal issues with them. As far as specifications, the back section of the clutch catalogues have identification and pressure information on there part numbers. This information will probably not be in computers and I suppose most counterman dont even know this information exists.

 

An OEM clutch is good to about 300-400 HP at the flywheel. After that they'll let go and burn.

 

I wonder what the horsepower is of the brand new ZO6?

 

Are the ZO6s running the twin clutch set-up? I thought I had read that somewhere.

 

Most of the Z06s that are driven hard burn the clutches out very quickly. They are being replaced with much better units. The stock Z06 clutch sucks for performance use.

 

I have to disagree with you here. My wife's 2002 Z06 has 4 Vette Magic Drag events, 6 WSCC autocross championships on the origianl clutch GM installed in it. I have to say the Centerforce C5 clutches had some MAJOR! issues in cars that I know of, maybe they have worked out the problems but, I wouldn't run a CF in our C5. I do run a Centerforce pressure plate in my 72 LT-1 Vette but, the first clutch (Dual Friction model) failed after 3000 miles of service. I used a Centerforce L-88 pressure plate the second time around with a McLeod Kevlar clutch disc and it went over 12,000 miles with numerous Drag Strip launches (3000+RPM with slicks) and several autocross events (one WSCC Championship) but seemed ready for replacement when I lost my rod bearing last year at a autocross event. Centerforce has changed the disc on their clutch line to something more in line with the McLeod design and they will probably do well with the new disc design. I think there are several new clutch designs that are interesting but, because I am conservative, I will stick with my tired and true L-88 flywheel (14LB nodular iron flywheel) and CF pressure plate/McLeod Kevlar disc combination with my new bullet. I would CAUTION anyone going with a Centerforce clutch to keep on top of clucth pedal free-play for the first 3,000 miles after installation. Clutch disc wear causes the bellville spring to close the gap to the release bearing and at high RPM with the couterweights of a Centerforce clutch, there is a potential of un-loading your pressure plate if the gap shrinks too much.

 

 

I told you so! But use anything you want as your spending the money and doing the labor.

 

I'll still stick by what I have seen over at the drags where many of the C5 and C6s have had with the stock clutches. Yes I agree on the CF clutches for the C5s are not very good but from what I have seen the Exceedy clutches seem to be holding up very well. The stock motored ones do not seem to have to much problem but when you start adding power or slicks the stock ones go away very quickly.