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'99 - '06 GM Truck Modifications
Engine & Performance
8.1L - '01 to '03 interchangeability
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<blockquote data-quote="Atrus" data-source="post: 13352" data-attributes="member: 1429"><p>First post on here, but have lurked for a while. I could really use your help for pre-planning</p><p></p><p>Anyone know of a guide that gives detailed changes on the engine/drivetrain of the 8.1 by year? I know a little on the LD side, but the HD/8.1 is new to me. </p><p></p><p>I have a 2001 crew cab 8.1L/Allison/4x4 that I am looking to swap a 2003 8.1L/Allison/4x4 drivetrain into. Reason being, the 2003 is a ridiculously low mileage drivetrain but is a beat-up regular cab. </p><p></p><p>Curious on what changed from '01 to '03...reluctor wheels, sensors/wiring harnesses, fuel delivery, etc. </p><p></p><p>Thanks in advance!</p></blockquote><p></p>
[QUOTE="Atrus, post: 13352, member: 1429"] First post on here, but have lurked for a while. I could really use your help for pre-planning Anyone know of a guide that gives detailed changes on the engine/drivetrain of the 8.1 by year? I know a little on the LD side, but the HD/8.1 is new to me. I have a 2001 crew cab 8.1L/Allison/4x4 that I am looking to swap a 2003 8.1L/Allison/4x4 drivetrain into. Reason being, the 2003 is a ridiculously low mileage drivetrain but is a beat-up regular cab. Curious on what changed from '01 to '03...reluctor wheels, sensors/wiring harnesses, fuel delivery, etc. Thanks in advance! [/QUOTE]
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'99 - '06 GM Truck Modifications
Engine & Performance
8.1L - '01 to '03 interchangeability
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