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Perhaps I have missed this in prior conversations concerning the 10 speed behind the gasser.

Jettech1

By Jettech1
in 6.6L Gas V8 (L8T)

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Jettech1 Senior Enthusiast

Jettech1

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Is GM putting the exact same 10 speed tranny behind the gasser as it does with the diesel?  To me that wouldn't make much sense because the gasser is half the torque of what the diesel is.  But if that's the case....holy crap...talk about not even barely using the limits of the allison with the gasser engine...

IDBrett Enthusiast

IDBrett

Posted
Posted (edited)

I haven't read a lot on this topic so my knowledge isn't worth much. But I do recall something to the effect of lighter clutch packs and converter. The weight of those components in the diesel 10 speed would rob too much power from the gas engine.

Edited by IDBrett
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CRApex Enthusiast

CRApex

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On 5/12/2023 at 8:40 PM, Jettech1 said:

Is GM putting the exact same 10 speed tranny behind the gasser as it does with the diesel?  To me that wouldn't make much sense because the gasser is half the torque of what the diesel is.  But if that's the case....holy crap...talk about not even barely using the limits of the allison with the gasser engine...

The guy that put out the video you posted said he confirmed it is the EXACT same transmission as the diesel, same part number.  He comfirmed that through some sources.  It has been great with my Duramax so should barely break a sweat matched to the gas motor.

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newdude Senior Enthusiast

newdude

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Yes, its the Allison 10L1000. 

 

No, its not the EXACT same part #.  Gas is 24294430, diesel is 24297785 and its about $1000 difference in price.  

 

Gas 10L1000 has a different torque converter, different clutch pack p/ns (so probably a clutch or two less per pack than the L5P).  

 

More to add, lots of the internal hard parts appear to be the same #s as well.  

 

2 hours ago, CRApex said:

The guy that put out the video you posted said he confirmed it is the EXACT same transmission as the diesel, same part number.  He comfirmed that through some sources.  It has been great with my Duramax so should barely break a sweat matched to the gas motor.

 

Edited by newdude
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Jettech1 Senior Enthusiast

Jettech1

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1 hour ago, newdude said:

Yes, its the Allison 10L1000. 

 

No, its not the EXACT same part #.  Gas is 24294430, diesel is 24297785 and its about $1000 difference in price.  

 

Gas 10L1000 has a different torque converter, different clutch pack p/ns (so probably a clutch or two less than the L5P).  

 

 

That's the information I was looking for right there!  Thank you sir.

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CRApex Enthusiast

CRApex

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Posted
2 hours ago, newdude said:

Yes, its the Allison 10L1000. 

 

No, its not the EXACT same part #.  Gas is 24294430, diesel is 24297785 and its about $1000 difference in price.  

 

Gas 10L1000 has a different torque converter, different clutch pack p/ns (so probably a clutch or two less per pack than the L5P).  

 

More to add, lots of the internal hard parts appear to be the same #s as well.  

 

 

Got it.  I was going off the info the reviewer provided in the video Jettech posted.

Jettech1 Senior Enthusiast

Jettech1

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11 hours ago, newdude said:

Yes, its the Allison 10L1000. 

 

No, its not the EXACT same part #.  Gas is 24294430, diesel is 24297785 and its about $1000 difference in price.  

 

Gas 10L1000 has a different torque converter, different clutch pack p/ns (so probably a clutch or two less per pack than the L5P).  

 

More to add, lots of the internal hard parts appear to be the same #s as well.  

 

 

Out of sheer morbid curiosity how much does that trans cost?

newdude Senior Enthusiast

newdude

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Posted
12 hours ago, Jettech1 said:

Out of sheer morbid curiosity how much does that trans cost?

 

 

Just under $3100 MSRP.  

Pryme Senior Enthusiast

Pryme

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Posted
10 minutes ago, newdude said:

 

 

Just under $3100 MSRP.  

That doesn’t seem as outrageous as other transmissions that I see costing double. What does a 6L90 run?

newdude Senior Enthusiast

newdude

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Posted
2 hours ago, Pryme said:

That doesn’t seem as outrageous as other transmissions that I see costing double. What does a 6L90 run?

 

 

$3709.

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Jettech1 Senior Enthusiast

Jettech1

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3 hours ago, newdude said:

 

 

Just under $3100 MSRP.  

That's about 5k less than I was thinking.  That's cheap!!  I'm shocked.

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Pryme Senior Enthusiast

Pryme

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Posted
1 hour ago, Jettech1 said:

That's about 5k less than I was thinking.  That's cheap!!  I'm shocked.

I’m surprised it’s cheaper than the 6spd. Seems suspicious.  

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Jettech1 Senior Enthusiast

Jettech1

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23 minutes ago, the8rotor said:

$3100??? I might have to buy and store one for that price 🤣

That price doesn't make sense to me.  I know that newdude is of course telling us the truth.  But seriously????  One of the main reasons I bought our 22 was because it had the old reliable 6L90E.  And I looked it up to have it replaced if needed off warranty and it was like 3500 bucks.  Of which I thought ok, that's doable.  So I'm thinking in my tiny brain that the 10 speed is going to be at least double that....I was wrong again apparently...

the8rotor Enthusiast

the8rotor

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Posted
23 minutes ago, Jettech1 said:

That price doesn't make sense to me.  I know that newdude is of course telling us the truth.  But seriously????  One of the main reasons I bought our 22 was because it had the old reliable 6L90E.  And I looked it up to have it replaced if needed off warranty and it was like 3500 bucks.  Of which I thought ok, that's doable.  So I'm thinking in my tiny brain that the 10 speed is going to be at least double that....I was wrong again apparently...

Really doesn't make sense - I bet the infotainment system is $8k 🤣

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