Help: Can anyone ID this Trans?

[tripleD]

I have a 2003 Duramax Quad Cab with an LB7/Allison and am looking at a 2006 motor/Allison combo that the owner is not quite sure what model he has LLY or LBZ (he bought it used and only has the motor/trans). I believe everything is an LBZ/6spd Allison combo.

The last part of the equation is if the rear housing on the trans is a 4x4 or a 4x2. I am not sure from the picture I have seen. If you could take a closer look and tell me what you think. I believe the rear housing can be swapped with my 03 Allison and it should work to convert it from 4x2 to 4x4.

Thanks!

 

[Chevy1925]

thats a 6 speed trans and looks to be 2wd.

 

[tripleD]

I agree, its a 6spd trans.

I think the whole setup is from 2006 and the motor is an LBZ even though its being advertised as an LLY motor/trans.

I don't see any other possibility unless I am mistaken somehow on the production years of the LLY.

 

[Troysalm71]

They made An lly in 06. The 8th digit if it were an lly would be a 2 if not mistaken. If it were to be an lbz, it would be a D. I suppose I'm sure you don't have a vin off it though.

 

[JRein]

An 06 LLY is the same as an LBZ just different tune

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[SoCalMike]

thats a 6 speed trans and looks to be 2wd.

James how can you tell from that picture?

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[Mike L.]

James how can you tell from that picture?

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No NSBU and shape of the extension housing, and speed sensor mount on tail.

 

[SoCalMike]

No NSBU and shape of the extension housing, and speed sensor mount on tail.

Thanks Mike

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[tripleD]

Thanks!! My suspicions were confirmed. LBZ with 2wd trans. This should work nicely for the swap I am planning.

 

[THEFERMANATOR]

No NSBU and shape of the extension housing, and speed sensor mount on tail.

What he said, and the 06+ shift shaft doesn't stick out far enough to put a nsbu on it even if you wanted to, so you know it's not a 5 speed with the nsbu removed. And the fact it has 3 speed sensors present means it was an lbz model as the lmm 07.5+ did away with the speed sensor in the bellhousing.

 

[Awenta]

Read up on swapping extension housings. It's bit more than unbolt and swap


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[Chevy1925]

James how can you tell from that picture?

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No NSBU and shape of the extension housing, and speed sensor mount on tail.

a blind squirrel finds a nut every once and while :roflmao: