Clutch Disc Recommendation
 

I’m looking for a clutch disc recommendation. I currently have a Hays Street/Strip setup in the Chevelle and have loved it from day one. Unfortunately they have discontinued it. BUT.....I found a lightly used pressure plate that is exactly what I have in my car now but want a good, STREETABLE disc. I do abuse the car a "little" and take it to the drag strip 2 or 3 times a year but I despise clutch chatter. The Hays disc was simply an organic disc but worked great!

McLeod recommended their Super Street Pro which is organic/ceramic. I was thinking their all organic disc.....

Thoughts???

Kurt :3gears:

I ran a Centerforce Dual Friction in my car for many years with no problems and no chatter. Light pedal pressure too. Many 7000 RPM shifts and lots of abuse and it never slipped.

I have 2 centerforce clutches. One in the 472 inch hemi. No problems and they work nice

I’m really only looking for just the disc, not a complete clutch kit, as I have two good Hays pressure plates.

My main concern is, do I use a dual friction or just stay with the organic that I’ve been using?

So far, McLeod, Ram and ACT discs have the best reviews......from the research I’ve done. No offense to any other product.

Kurt

I've got a dual friction here and just purchased a Mcleod SSPro like you mentioned. They're really the same disc, organic/ceramic puk. The Mcleod is a little more than half the cost.
Breaking in a dual friction was cake and there was no chatter.
You'd be happy with either Kurt.
Just follow the break-in procedure.

have it rebuilt??

I too installed a CF 2 clutch and pressure plate in my Torino and love it. Works great

You can buy the CF DF or McLeod disc and use your pressure plate.

Thanks for the replies......I’m still on the fence of which type of disc to buy although I’m going to decide tonight. I’ve had a few companies reply to my questions that I sent them. That did help.

I’m thinking my pressure plate will be fine but I bought a VERY nice, hardly used Hays pressure plate that’s the same as what I have in the car now. So my plan is to get a new disc, fork and throw out bearing. Then, if the one in my car is good or need litte maintenance, I’ll have that for a backup.

Kurt

How often do you run your car on the street?

Kurt

I bought the McLeod SSpro for the '69 post L78 which has a 427 now. It may never see the strip.
I cut my teeth regarding clutches with a 3200lb '55 chev with this very engine. Started with a DF and a Muncie, that slipped and warped the steel flywheel. That's a tough pill to swallow beings how much those flywheels cost. I went with a steel 40lb flywheel, and a full ceramic disc and that same pressure plate, just rebuilt. That slipped so eventually went to a full metallic and switched to a jerico.
All these saw a lot of street miles but still saw some very high rpm launches, wheels just barely separating from the pavement.
Now that car's gone but upon teardown, noticed the flywheel showed signs of heat so had it surfaced.
That DF pressure plate had seen better days so it got tossed in favor of the Mcleod, which is the same pressure and again, the same disc as the centerforce.
IIRC, our engines are very similar except I'm running some worked 063 heads and a SFT Crower 01351 cam.
I'm telling you all this because so many things are at play here. Whichever clutch you pick, it'll be a compromise. Go too light, you'll slip, just won't know the extent of the damage till it glazes or lets go, but it'll always slip a little. Slipping will heat your flywheel/PP and the more aggressive of friction composite, the less it'll slip but the more that disc will cut into your steel surfaces. The safest way I know to run the street and strip is use a Mcleod RST, save the RXT for above 600ft lbs and higher rpm launces.
Spend the money now or you'll for sure be changing out your stuff within 2 to 3000 miles. That's IF you dragrace a little.

Well, I finally bought a clutch disc. This really had my head spinning as I have a car that is truly street driven that sees the track a couple times a year. My initial feeling was to get a dual disc clutch but I want a car that my peanut of a wife can drive too.

So I went with, what I think, is a well designed disc made by RAM. The part number is 310M. Here is the description:

Ram 300 Series clutch discs feature a polyurethane-encapsulated sprung hub to handle higher shock loading than standard discs. They also have premium, non-asbestos, organic facings bonded to a steel backing for better heat dissipation and greater strength. Available with a marcel carrier (300M Series) for reduced chatter and smooth engagement, they work great for race or Hot Street applications.

It has 8 springs in the hub where most have only 4-6.

I plan on installing it in the next few weeks and will give a full update.

Thanks to everyone for all your input.

Kurt

Just saw this, I installed a Ram Powergrip HD (900 series) in my 440 six pack 'cuda and love it. It is very streetable, makes a hint of noise when cold, but drives just like a stock clutch. We just installed the same setup in a friends Challenger with 426 hemi, but won't have that out for testing for another few weeks. Both cars will see dragstrip duty at the Pure Stocks along with street driving, so we will see how they fare.

I talked to three different respected driveline/clutch/hot rod shops before purchasing and every one of them recommended Ram without hesitation. Will be curious to hear how the 300 series works for you.

I continued this discussion on my thread......

https://www.yenko.net/forum/showthre...26#post1417726

Kurt