Duramax Diesels Forum Truck of the Week
  #16  
Old 01-04-2017, 06:50 AM
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Evan@LimitlessDiesel Evan@LimitlessDiesel is offline
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Originally Posted by Bustedknuckles View Post
2003
I'd start with trying different ECM and TCM tuning.
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  #17  
Old 01-04-2017, 06:52 AM
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Originally Posted by Evan@LimitlessDiesel View Post
I'd start with trying different ECM and TCM tuning.
Just got off the phone with the owner and turns out the tuning does have the defuel messed with. Has almost no defuel under wot but the shop told him they run this tuning with all there transmissions and its fine so its going to be a tough sell to get him to try different tuning. 😑
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  #18  
Old 01-04-2017, 07:07 AM
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Originally Posted by Bustedknuckles View Post
Just got off the phone with the owner and turns out the tuning does have the defuel messed with. Has almost no defuel under wot but the shop told him they run this tuning with all there transmissions and its fine so its going to be a tough sell to get him to try different tuning. 😑
well he just guaranteed you or someone else work in the future for the trans
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  #19  
Old 01-04-2017, 08:07 AM
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It is a known fact that you will run slower with no defuel and hurt the trans.
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  #20  
Old 01-04-2017, 11:14 PM
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Not to go off topic here......but if your not supposed to use the full TG in a 5 speed, what are you supposed to do? I have this same setup in my LB7 (raybestos standard clutches, full TG, ratiotek springs) & it seems to shift ok....not as crisp as my LBZ though....
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  #21  
Old 01-05-2017, 05:30 AM
Vmyrhaug Vmyrhaug is offline
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Is transgo kit for 5 speed allison not to recomend?
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  #22  
Old 01-05-2017, 06:40 AM
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Quote:
Originally Posted by henery97 View Post
Not to go off topic here......but if your not supposed to use the full TG in a 5 speed, what are you supposed to do? I have this same setup in my LB7 (raybestos standard clutches, full TG, ratiotek springs) & it seems to shift ok....not as crisp as my LBZ though....
If I remember right transgo and gpz clutches are a bad idea.. causes tie ups.

There's a lot of older trucks out there with a full transgo and aftermarket clutches.. it's just not "ideal" anymore because clutch technologies have advanced to where you don't need it for the increased clutch pressure to hold.


If running you gpz style clutches you do all the pressure mods, clutches & steels, seals, etc, transgo jr, and your good to go.
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  #23  
Old 01-05-2017, 08:08 AM
onebaddmaxxx onebaddmaxxx is online now
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Quote:
Originally Posted by Evan@LimitlessDiesel View Post
What year truck? The full transgo is nothing but trouble.


I warned him lol
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  #24  
Old 01-05-2017, 08:12 AM
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Full Transgo was built for stock trans and clutches back in '02. I did the initial testing back then. When Joe Webb at Suncoast came out with his Alto stage 3 kit, the 3'4 shift started to get funky. Whe he came out with his stage 4 kit, the 3/4 started to get very hard and has gotten worse because of bad tuning and messing with defuel by idiots who don't know how an Allison works.
Remember that the Allison comes from the factory with a 3/4 tie up. The C2 tends to overpower the C3 on the 3/4 shift. With a stock trans and no power adder, it won't hurt anything.
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  #25  
Old 01-05-2017, 08:58 AM
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I remember you an Joes conversations about this on the place back in the old days. It was school time for all of us on the forum back then when y'all would openly discuss it.
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  #26  
Old 01-05-2017, 09:05 AM
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Thanks for sharing Mike
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  #27  
Old 01-05-2017, 09:21 AM
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Quote:
Originally Posted by WolfLLY View Post
I remember you an Joes conversations about this on the place back in the old days. It was school time for all of us on the forum back then when y'all would openly discuss it.
I sure miss that guy. He and I talked almost every single day like a couple of old women. There was always something technical to discuss and we tried some crazy shit with the Allison.
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  #28  
Old 01-05-2017, 09:38 AM
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Quote:
Originally Posted by Vmyrhaug View Post
Is transgo kit for 5 speed allison not to recomend?
The C2 piston mod in the full Transgo is trouble in most cases. If you choose to eliminate this mod, other mods need to be done to compensate and protect the clutches. If you know what you're doing, the 5 speed will hold huge power and live.
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  #29  
Old 01-05-2017, 09:59 AM
Vmyrhaug Vmyrhaug is offline
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Quote:
Originally Posted by Mike L. View Post
The C2 piston mod in the full Transgo is trouble in most cases. If you choose to eliminate this mod, other mods need to be done to compensate and protect the clutches. If you know what you're doing, the 5 speed will hold huge power and live.
I have a full transgo kit in my work Shop for my 03. I'm going too build the trans in the future..
Is it any ting in that kit i should use? And yes, i'm going too build it my self, i live in norway and ship the trans to USA and back will bee too expensive.
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  #30  
Old 01-05-2017, 10:34 AM
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IOWA LLY IOWA LLY is offline
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Quote:
Originally Posted by Vmyrhaug View Post
I have a full transgo kit in my work Shop for my 03. I'm going too build the trans in the future..
Is it any ting in that kit i should use? And yes, i'm going too build it my self, i live in norway and ship the trans to USA and back will bee too expensive.
You can use everything except the c2 piston mods.

As Mike already stated, you will need to do other mods to give C2 more holding power though.

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