Red Alto or Rybestos

Mike L.

Got Sheep?
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Aug 12, 2006
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I don't have time to drive too far. I can get the trans out in no time and put a new 1 back in. Would build it my self if I had time. Reading these forums have me on edge though. Can I just order 1 from you Mike? It sounds like you are the Godfather of the allison and you seems like you are a great guy even if you weren't a transmission man. Looks like you go above and beyond to make sure these guys are taken care of.

In my youth I had a vision of becoming a priest till I saw this long legged blonde walk by and gave up the idea. Married the blonde by the way.:happy2:
Call me in the morning and we can talk.:D
 

56taskforce

Well-known member
Mar 30, 2014
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Thank guys for all the great responses. I have a Suncoast 6R-3 and Goerend R on its way. Spoke with Mike L and saved some cash as he said the new clutches good without his oilers and he no longer sells them.
 

WolfLMM

Making Chips
Nov 21, 2006
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Suncoast is only about 100 miles away from me, the only other person on the planet that I would let touch my trans is 3,000 plus miles away:D
 

56taskforce

Well-known member
Mar 30, 2014
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I am not anticipating any troubles building it myself but Suncoast tech support ensures me they will be standing by.
 

WolfLMM

Making Chips
Nov 21, 2006
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I built my own stage 4, with Mike's guidance. It held up great, but if your making real power and beat on it, I'd recommend getting a real builder to do the work. As it has been said, it's the little things that add up.
 

greendury

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Jan 28, 2011
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Bringing this back up. I build Ally's for guys locally and have always used Alto power packs with great luck. I do agree that the 8 c2 causing a sometimes firmer than expected 3-4 shift is not the greatest. Reading this thread I decided to test out the gpz clutches. I ordered some up and they arrived today. I was a bit surprised that the gpz c2 friction was the same size as stock. The alto is slightly larger increasing surface area which I would think would be a good thing. So is it the material that makes the difference? Thoughts.
 

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56taskforce

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Mar 30, 2014
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Being the OP of this thread I had to take a look when I saw it pop back up. I can not answer your question as my choice to use the GPZ clutches came from the knowledge shared right here in this thread. I would like to thank all those who shared as I am very happy with how my transmission build went and the performance it is giving. I would also like to say how impressed I was with the arrangement of the clutch packs and craftsmanship that went in to the top and sring plates in the Suncoast GMax-6 kit.
 

Hot COCOAL

May the farce be with you
Jun 9, 2012
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Bringing this back up. I build Ally's for guys locally and have always used Alto power packs with great luck. I do agree that the 8 c2 causing a sometimes firmer than expected 3-4 shift is not the greatest. Reading this thread I decided to test out the gpz clutches. I ordered some up and they arrived today. I was a bit surprised that the gpz c2 friction was the same size as stock. The alto is slightly larger increasing surface area which I would think would be a good thing. So is it the material that makes the difference? Thoughts.

Yes, material absolutely makes a difference!!! Borg Warner, Alto Power Pac, Alto Red, GPZ....they all have/use a different compound for their clutch lining (Some organic, some synthetic) and most kits even use different metals for their steels
They all provide a different amount of potential in a given working environment

I look at the frictions and steels much like a brake pad material and rotors...there are typically several options for any given application all yeilding a specific result for given working parameters.

The friction material wether it be on a brake pad or clutch needs to have its steel mating surface matched to it for temperature operating range ans surface friction needed. Otherwise one side will tear the other apart or just plain and simply not work and privide the friction necessary to do its job

Youre not going to use a set of brake pads designed for a set of carbon ceramic rotors, with OEM steel rotors... Even if the rotors might be exactly the same dimension, those pads wont get warm enough to provide adequate friction to work properly while at the same time they would literally be shredding the OEM steel rotor to bits

Same goes for the frictions and steels in a transmission
Thankfully, now more options are being made available for the Allison

Granted, the comparison between a brake pad compound and a clutch lining compound may be bery crude, but consider theyre both a friction/slip compound technically doing a very similar job...slowing moving metal parts, transfering energy and dissipating heat
 

greendury

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Jan 28, 2011
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Yes, material absolutely makes a difference!!! Borg Warner, Alto Power Pac, Alto Red, GPZ....they all have/use a different compound for their clutch lining (Some organic, some synthetic) and most kits even use different metals for their steels
They all provide a different amount of potential in a given working environment

I look at the frictions and steels much like a brake pad material and rotors...there are typically several options for any given application all yeilding a specific result for given working parameters.

The friction material wether it be on a brake pad or clutch needs to have its steel mating surface matched to it for temperature operating range ans surface friction needed. Otherwise one side will tear the other apart or just plain and simply not work and privide the friction necessary to do its job

Youre not going to use a set of brake pads designed for a set of carbon ceramic rotors, with OEM steel rotors... Even if the rotors might be exactly the same dimension, those pads wont get warm enough to provide adequate friction to work properly while at the same time they would literally be shredding the OEM steel rotor to bits

Same goes for the frictions and steels in a transmission
Thankfully, now more options are being made available for the Allison

Granted, the comparison between a brake pad compound and a clutch lining compound may be bery crude, but consider theyre both a friction/slip compound technically doing a very similar job...slowing moving metal parts, transfering energy and dissipating heat

This is a good way to look at it. I guess the small size difference would not make up for a lacking friction material. But here I placed the gpz on top of the alto so you can see that the alto is slightly larger.
 

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Hot COCOAL

May the farce be with you
Jun 9, 2012
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This is a good way to look at it. I guess the small size difference would not make up for a lacking friction material. But here I placed the gpz on top of the alto so you can see that the alto is slightly larger.

That looks like a considerable size difference!
Close to 10%
???

I will quickly conceede to not knowing a dang thing about the witchcraft that is transmissions
Lol

Based off the results so far it would seem like the compound of the GPZ clutches is pretty awesome. Its able to withstand the heat/force/abuse they need to and last while, while also providing the friction needed to hold greater than stock power. While still providing enough slip to make for a comfortable shift....all utilizing the same amount of surface area as a stock unit!
Thats pretty impressive

Theyre doin something right!
The GPZ compound looks considerably different than the Alto's compound...It might be obvious, and I might be backwards in thought here...but

I would think that the lesser surface area of the GPZ is what makes for a smoother 3-4 shift (not having as much area to grab)
And the compound difference of the GPZ's is what allows the holding potential to remain the same or better than the Alto's?

But again, its a dark witchcrafty art to me
Lol
 

Hot COCOAL

May the farce be with you
Jun 9, 2012
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I know fluid has a pretty big part in everything too...
What fluid is Raybestos recommending for the GPZ clutches?
 

Bonestock

Active member
Aug 9, 2010
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Torque Shift here couldn't find the Mike L recommended Citgo anywhere close to home.

You still liking that r converter? How is stall speed with your setup? Does it feel tight loose or just right? How about coupling. I have been waiting to order mine and its killing me. I am gonna order the 1st week of March.
 

THEFERMANATOR

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Feb 16, 2009
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When I did the math on it, it was more like a 20% increase in surface area from the ALTO red over a stock clutch disc. The thing is for a 5 speed anyways, the increase in surface friction area is on the outer edge where you don't get a good clamp on it anyways due to the offset apply.
 

Mike L.

Got Sheep?
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Aug 12, 2006
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Sometimes smaller is better.;) If you know what is going on with the Allison; then you will know why.
 

Bonestock

Active member
Aug 9, 2010
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Per what I read on a post from mike...this is solely my interpretation obviously, but dex 3 isn't very good in temps below -20

Im gonna slowly switch to transynd

Interesting find. I havent had any issues with it but I usually drive like a white man when its -20 out. Also have 3 other rigs to drive.