Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

allison transmissions

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Old Aug 3, 2010 | 10:35 PM
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young gun's Avatar
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From: cleveland,ohio
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hello, my dad has a 03 ext cab short bed 4x4 and i was wondering if i were to find a allison 2k or 3k model would it bolt up the same and would i need a different computer? would the transfer case bolt up the same? and would the driveshaft need adjusted? thanks in advance for any help to my answers
 
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Old Aug 3, 2010 | 10:46 PM
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2500HeavyDuty's Avatar
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theyre not a direct fit, an th 2k and 3k are huge
 
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Old Aug 4, 2010 | 10:48 AM
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K50
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From: Alberta
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Yeah. Those transmissions have heavy internals...probably more adept to pulling huge loads than spinning up really fast.
 
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