Duramax Diesels Forum Truck of the Week
  #1  
Old 01-03-2017, 06:04 PM
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Default Hard 3-4 shift.

I just built a transmission for a buddy and its great other than a pretty violent 3-4 shift under wot. I used raybestos GPZ torq packs in C1 through C4, MikeL/ratiotek shift, trim, and pump springs and a transgo shift kit along with a DPC triple disc. Did a relearn with a snapon solus pro when i built it and these are my clearances. Any help or criticism would be greatly appreciated 👍
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Old 01-03-2017, 06:16 PM
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Sure it's a 3-4 and not a converter lock?
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Old 01-03-2017, 06:32 PM
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Default Hard 3-4 shift.

Stock defuel in ecm tuning and stock tcm defuel tuning?

Has he tried a stock tune to see if it clears up?
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Old 01-03-2017, 07:35 PM
bmc1025 bmc1025 is offline
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Is this a 5 speed with the full transgo in it?
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Old 01-03-2017, 07:38 PM
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Quote:
Originally Posted by clrussell View Post
Sure it's a 3-4 and not a converter lock?
Fairly certain. Its pretty violent.
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Old 01-03-2017, 07:39 PM
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Quote:
Originally Posted by Chevy1925 View Post
Stock defuel in ecm tuning and stock tcm defuel tuning?

Has he tried a stock tune to see if it clears up?
As far as i know. Thats a good thought though. Definitely going to look into that as im not 100% sure who tuned the truck and i thought it shifted odd before i built it.
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Old 01-03-2017, 07:39 PM
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Quote:
Originally Posted by bmc1025 View Post
Is this a 5 speed with the full transgo in it?
Yessir.
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Old 01-03-2017, 07:44 PM
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It is likely tie up from using the full transgo along with the better clutch packs.
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Old 01-03-2017, 07:50 PM
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Quote:
Originally Posted by bmc1025 View Post
It is likely tie up from using the full transgo along with the better clutch packs.
Thats what another knowledge allison guy told me 😔 any options other than pulling the trans and undoing the internal mods?
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Old 01-03-2017, 07:57 PM
bmc1025 bmc1025 is offline
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Don't mistake me for a knowledgeable Allison guy, I only know enough to get into trouble.

I don't think there is any feasible way around it.
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Old 01-03-2017, 07:58 PM
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Glad I undid the transgo on the last 5 speed I did
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01 ext cab, 480 over billet ihi, trans with g converter, sac 45s, tap shift, lots of black, everything built by myself with help from some of the best in the buisness.

Thanks to everyone on this forum who has helped me and those whom I bought parts from.

Special thanks to Evan, James, Russell, Mark and all the others I'm forgetting.
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  #12  
Old 01-03-2017, 08:03 PM
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Quote:
Originally Posted by Inline only View Post
Should a bought a Cummins
Yeah. That would be perfect. Then he could spend a couple grand on billet shafts and servo upgrades to hold the power a allison can hold with just upgraded clutches and a shift kit 🙂
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Old 01-03-2017, 08:22 PM
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We got him completely deleted. Sorry for not catching that one sooner, busted.
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Old 01-03-2017, 08:57 PM
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What year truck? The full transgo is nothing but trouble.
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Old 01-04-2017, 05:40 AM
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Quote:
Originally Posted by evan@limitlessdiesel View Post
what year truck? The full transgo is nothing but trouble.
2003
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