Stacks? I see no stacks in Kendricks album?
Me thinks someone needs to update some photos!
Oo. :-laf
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SBC DD Street and SBC DD Comp
- Thread starter Diesel Freak
- Start Date
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Stacks? I see no stacks in Kendricks album?
Me thinks someone needs to update some photos!
Oo. :-laf
You should see the look on crawler's face as he puckers a cone in those leather seats:-laf:-laf:-laf:-laf:-laf
https://www.turbodieselregister.com/user_gallery/displayalbum.php?&albumid=1256
http://www.texasdieselworks.com/9812vslt/
http://www.texasdieselworks.com/twinspics/B1_bigbrother/
https://www.turbodieselregister.com/user_gallery/displayalbum.php?&albumid=1256
http://www.texasdieselworks.com/9812vslt/
http://www.texasdieselworks.com/twinspics/B1_bigbrother/
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Originally posted by Mark_Kendrick
Well,
The street version is no different to drive than the comp. the
oh, and sleddy... I could give it all the rpm i have and it wouldn't care. I do it daily
FUN!
Now LOAD the truck. 40,000 should be sufficient... ... ...
I think the comp version is shaping up to be an excellent clutch for medium power trucks, that like to drive hard on the street, in the 400 to 500 hp range.
Now, if it were about $950, it would be a bargain that couldn't be beat.
Hammer
TDR MEMBER
"oh, and sleddy... I could give it all the rpm i have and it wouldn't care. I do it daily. . 
"but the thing you gotta remember is this clutch is beyond streetable. Pedal pressure is easy than stock... I know I drive both everyday. The clutch is not grabby and has a stock feel to it. These clutches can sled pull AND drag race. ". .
You know I hear this all the time on this board,pedal pressure is easier than stock. It would worry me if I heard that,it shows me weakness and sometime down the road that means early failure. I can not understand why owners who buy these units(double disc clutches) expect a "ricer feeling" in their clutch pedals,these are trucks with units designed for high hp applications. So a owner has to think he will trade one thing for another,meaning a little stiffer pedal for much better & proven hook.
Just my thoughts... ..... andy
"but the thing you gotta remember is this clutch is beyond streetable. Pedal pressure is easy than stock... I know I drive both everyday. The clutch is not grabby and has a stock feel to it. These clutches can sled pull AND drag race. ". .
You know I hear this all the time on this board,pedal pressure is easier than stock. It would worry me if I heard that,it shows me weakness and sometime down the road that means early failure. I can not understand why owners who buy these units(double disc clutches) expect a "ricer feeling" in their clutch pedals,these are trucks with units designed for high hp applications. So a owner has to think he will trade one thing for another,meaning a little stiffer pedal for much better & proven hook.
Just my thoughts... ..... andy
Oh THAT truck! duh! :-laf
Originally posted by Sled Puller
FUN!
Now LOAD the truck. 40,000 should be sufficient... ... ...
I think the comp version is shaping up to be an excellent clutch for medium power trucks, that like to drive hard on the street, in the 400 to 500 hp range.
Now, if it were about $950, it would be a bargain that couldn't be beat.
Well, I'm a little past he 4-500hp range. I've sled pulled with it recently. . 44,000# though. I only pulled it 272'. . good enough for second place though.
The 4-500hp trucks only need a single disc.
The dual disc clutch uses the same ~3200# plate that his single disc clutches do so they should have a better pedal than stock.
Maybe you need someone to reengineer your pressure plate to make better use of your pedal effort.
Hammer
TDR MEMBER
There is nothing wrong with my pedal effort,don't think I said that anywhere Mark. Its hard to have excessive pressure with a stock slave cylinder,wouldn't you agree??. If there was do you not think the weakest link would fail easily,i. e-the slave cylinder?.
At some point the "soft" pedal pressure has to affect clamping force. You can not have both and have no slippage is all I am saying. Wow,one pull and it don't slip,what about all the others??.
I do disagree with your 400-500 truck and clutches. I look at it this way,they need whatever the owners decide they need. Sure a single will work,but for how long??. One thing is for sure later,when they pay for the next clutch job,they will wish they did it correct the first time(and thats not my opinion,but,the opinion of all I chatted with when buying mine).
Not my truck here,not my decision,just offering a few thoughts I ran into when buying mine. "Ricer Pedal' away my friend,I know mine will hook... ... ... . Andy
At some point the "soft" pedal pressure has to affect clamping force. You can not have both and have no slippage is all I am saying. Wow,one pull and it don't slip,what about all the others??.
I do disagree with your 400-500 truck and clutches. I look at it this way,they need whatever the owners decide they need. Sure a single will work,but for how long??. One thing is for sure later,when they pay for the next clutch job,they will wish they did it correct the first time(and thats not my opinion,but,the opinion of all I chatted with when buying mine).
Not my truck here,not my decision,just offering a few thoughts I ran into when buying mine. "Ricer Pedal' away my friend,I know mine will hook... ... ... . Andy
The soft effort is achieved with a different fulcrum for the pressure plate. you get a softer pedal because you have a bettter mechanical advantage.
The stock cylinder is seeing a bit less stress. When the pedal effort increases the stress on the slave is increased. The two are directly proportional.
I've seen a ConFE take 60k+ miles of abuse above 450hp and handle everything but nitrous above 550hp.
They do it with a very docile action and engagement. Most folks have wives that would throw a fit over a DD with a stiff pedal. I prefer a single but I can't get a heavy enough pressure plate to clamp it because of the weak link. . the slave. A single shifts faster and smoother and is easier on the synchros because of the reduced wieght. Nothing holds like a dual disc though.
Peter and family make clutches for almost every application. Industrial, Semis, Ricers, Pickups, cars, oem replacement, racers and even HP junkies like us. He's pretty creative and extremely experienced.
As far as hook goes. . the SBC Comp DD hooks like none other, Has little or no chatter and little or no noise while disengaged. He biiult his plates, flywheel and centerplate... he didn'e buy one off the shelf. That makes it expensive but worth it.
The stock cylinder is seeing a bit less stress. When the pedal effort increases the stress on the slave is increased. The two are directly proportional.
I've seen a ConFE take 60k+ miles of abuse above 450hp and handle everything but nitrous above 550hp.
They do it with a very docile action and engagement. Most folks have wives that would throw a fit over a DD with a stiff pedal. I prefer a single but I can't get a heavy enough pressure plate to clamp it because of the weak link. . the slave. A single shifts faster and smoother and is easier on the synchros because of the reduced wieght. Nothing holds like a dual disc though.
Peter and family make clutches for almost every application. Industrial, Semis, Ricers, Pickups, cars, oem replacement, racers and even HP junkies like us. He's pretty creative and extremely experienced.
As far as hook goes. . the SBC Comp DD hooks like none other, Has little or no chatter and little or no noise while disengaged. He biiult his plates, flywheel and centerplate... he didn'e buy one off the shelf. That makes it expensive but worth it.
left at 2200 rpm in 3rd 4whl low, slipped just long enough to get moving... 6ft or so then let out on the clutch and in on the throttle.
I made the pull fine but broke as I left the parking lot. I peeled 4 teeth off third gear and broke the intermediate shaft just past the input shaft.
$48 winnigs. . a $120 tow home and a new NV4500. I think I'll stick to the track and dyno so i'll have more money for R&D insted of transmission repair. It sure was fun though.
LMAO... Mark, you're kinnin me!
I have a single disc clutch. It is a SBC CON FE, and it does not work for a pulling clutch... ...
My truck dyno's between 427 and 495 depending on the dyno and the CF for the day.
For competition use, a single disc clutch just will not cut it!
This thread is all about competition use of a clutch.
Geeeze Mark, I thought you knew better than to make a comment like that.
You have to put the application into the equation. If you are using your clutch like a torque converter to magnify torque then you are right. a feramic clutch is not good.
A better solution would be a single disc puck clutch. IT wouldn't be streetable though.
So if you want to slip it for a while then let it out then you are right you can't use a streetable single. You'd have to use a dual disk.
The problem I run into is the clutch and motor are stronger than the transmission.
Jet Pilot, bring any 500hp truck you like. you'll have a 100hp advantage 
A better solution would be a single disc puck clutch. IT wouldn't be streetable though.
So if you want to slip it for a while then let it out then you are right you can't use a streetable single. You'd have to use a dual disk.
The problem I run into is the clutch and motor are stronger than the transmission.
Jet Pilot, bring any 500hp truck you like. you'll have a 100hp advantage
Hammer
TDR MEMBER
This is true,the first good statement here you made.
Some truth here at least,you are correct he did do the work himself and it is quiet. 2 things incorrect though with this comment and NO ONE has touched on it at all in any part of this thread. While this hooks well on the street(yes I have driven one if you need to ask)it still has problems at the pulling tracks in the Midwest,this is a well known fact. As for expensive,nah,it ranks in the same line equal to the other dual disc setups out there.
How about putting the cheerleader suit away and sticking to the facts... .
Fact-Yes these are quality units backed by a company who has already shown the membership here their customer service record is impeccable.
Fact-They are relatively quiet units and hook well on the street,but,have slipped when sled pulling. The comp version I drove acted like the Haisley and the Mitchell,not much difference on the street.
Fact-Cost is comparable for all 3 competition Double disc setups and yes the cost of reliability is not cheap.
Fact-There is no good answer for which is the best combination for dual duty as something is going to displease the owners,whether its rattle,grabbiness,pedal pressure or stiffer shift points. They will have to decide whats best for them.
I have tried to remain neutral in this post as to what is best. It is not me looking for a clutch,but,facts from both sides should be presented,correct?... ..... Andy
P. S. -One way to look at this clutch deal as which to decide on is this and it was a BIG determining factor when I bought mine. My decision was made by research,not by hype or stories,think about this some and look in the archives a little.....
When determining what was best I made the calls,got the prices,listened to the hype and then researched who had what and what they did with them. The single biggest factor to me was longevity,who has has been able to make theirs live the longest doing what they do. One person stood out to me big time,Sled Puller. Not because he is a friend,not because he has his truck on the ragged edge for pulling,but the way the unit he had complimented his style. Think back a little,Gene had broken just about EVERYTHING in his drive line in the last 2 years and needed them updated due to it. The one lone constant that had never failed him and never had to be removed,changed or adjusted was the clutch assembly. That to me was reason enough and it was purchased.
Last time I checked this thread is not about the other clutches.
It's about the SBC DD's . . Street and Comp.
I haven't said anything that is not factual.
I know that the Comp will not slip unless you want it to. I hooked to the sled at well over 500hp and had no slippage.
After a few fueling mods. . I make a little more now I still have plenty of clutch.
It's about the SBC DD's . . Street and Comp.
I haven't said anything that is not factual.
I know that the Comp will not slip unless you want it to. I hooked to the sled at well over 500hp and had no slippage.
After a few fueling mods. . I make a little more now
I still have plenty of clutch.Hammer, Thank you for the nice words. I hope you know that I did not take it personal on your decision of clutch. You bought a fine clutch and it will serve you well. You are right, some of the big hp pullers have slipped our clutch with the sled. We have also sold many of these DD clutches and many of them are not having problems. The ones that are having problems will be fixed come next season. We are making some metal changes and some plate load adjustments. We tried our best to build the all around clutch keeping the safety factor our priority and for 90% of the people it is doing the job. Now for the other 10%, it will be fixed so help me god. We do not have the liberty to test the clutch on our own vehicle (don't have one) and the only real test is the real world. We are working with our higher hp guys and will keep working until it is perfected at our expense not theirs. They were willing because they believe the outcome will be good.
Now, you gave a lot of facts but in your statement you said that Gene has not touched his clutch in two years. This is simply not true and if he told you that... . well then I don't know what to think about the guy anymore.
Peter
Now, you gave a lot of facts but in your statement you said that Gene has not touched his clutch in two years. This is simply not true and if he told you that... . well then I don't know what to think about the guy anymore.
Peter
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I have always said the clutch has never failed me, I had it apart last winter, and while it could have went back in, I upgraded, becuase I knew how I needed to drive, to WIN this year.
I think the people at Muncie got a look at how I launch, the gripping satan tires I run, and how much abuse my Mitchell clutch is withstanding.
When the transmission let go a few weeks ago, I didn't bother even looking at the clutch. I knew it was ok.
You don't know what to think about me? LOL!
Shoot, I don't know what to think about you guys, still trying to hook the mighty Cummins, when at least two other companys have been doing it for several years now.
I think the people at Muncie got a look at how I launch, the gripping satan tires I run, and how much abuse my Mitchell clutch is withstanding.
When the transmission let go a few weeks ago, I didn't bother even looking at the clutch. I knew it was ok.
You don't know what to think about me? LOL!
Shoot, I don't know what to think about you guys, still trying to hook the mighty Cummins, when at least two other companys have been doing it for several years now.
Gene,
What are you going to do in 2004 when they won't let you pull with that cast iron pressure plate and flywheel?
Lets see... . they have updated their discs and redesigned their center plates a few times now. Now they are going to have to redo the pressure plate and flywheel. This is all in the process of growth Gene. I am doing this as well but you feel the need to put down. Using cast iron is cheating. Metallics/feramics grip to cast far easier then steal. Haisley has the only true SAFE (or should I say legal) high hp puller right now with their (competition puller) but it is not streetable.
Good luck, we"ll be watching
Peter
What are you going to do in 2004 when they won't let you pull with that cast iron pressure plate and flywheel?
Lets see... . they have updated their discs and redesigned their center plates a few times now. Now they are going to have to redo the pressure plate and flywheel. This is all in the process of growth Gene. I am doing this as well but you feel the need to put down.
Using cast iron is cheating. Metallics/feramics grip to cast far easier then steal. Haisley has the only true SAFE (or should I say legal) high hp puller right now with their (competition puller) but it is not streetable. Good luck, we"ll be watching
Peter
How is doing something well cheating? No rules have been broken, that I know of.
By 04, I reckon I won't need a street clutch anymore.
I will certainly check out the vendors who have had tremendous success in this pulling business, thus far.
Nobody is standing still, out there, try to catch up Peter, we are still waiting for the "END ALL" clutch you promised, dare I say BRAGGED about this spring? Before it was even in a truck?
Dang, it shore looked good on paper, though, didn't it?
I wouldn't mind leaving the disel pick up vendors behind, and get into a 4 disc Crower.
But if any of the clutch vendors above will build a SFI approved clutch and flywheel, that will live and hook, I will buy it.
By 04, I reckon I won't need a street clutch anymore.
I will certainly check out the vendors who have had tremendous success in this pulling business, thus far.
Nobody is standing still, out there, try to catch up Peter, we are still waiting for the "END ALL" clutch you promised, dare I say BRAGGED about this spring? Before it was even in a truck?
Dang, it shore looked good on paper, though, didn't it?
I wouldn't mind leaving the disel pick up vendors behind, and get into a 4 disc Crower.
But if any of the clutch vendors above will build a SFI approved clutch and flywheel, that will live and hook, I will buy it.
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Issue 128 – Digital Version
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