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    LB7 into 2001 suburban complications

    to clarify further.....yes I know I have to use the 01-02 engine harness, but will a 2004 ficm work with the 01-02 harness?
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    LB7 into 2001 suburban complications

    Hey bigblaze, I didn't know that but thanks for the heads up. I do have a 02 harness, but it had a electric tcase and I do have the 261xhd, so which color wires or what does the connector look like that you have to modify. Also, while I have your attention, can I use the 2004 ficm and engine...
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    LB7 into 2001 suburban complications

    I am not sure on the rear end yet, I hope it holds up though as this swap is getting expensive quick. I would have gone with the NP263XHD, but wanted all manual so I sourced a 261XHD instead. Originally I thought the 263 was the manual case, but finally figured that out as I don't like...
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    LB7 into 2001 suburban complications

    My BURB came with an 8.1 mated to a 4l80 or 85E and a NP8 ( I think) tcase to clarify. Are you guys telling me that even though I have a 2004 duramax with its own engine wiring harness, I can still use an older 2001/2002 body harness to connect up to it? What years of Allison 1000 are...
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    LB7 into 2001 suburban complications

    Thanks for the info guys.......I will look at the other link/s you recommended and try to get in touch with those users who may know. Any advice on axles or is the stock setup with 4.10's OK for the duramax allison setup. I am not going to be turning this motor up and don't plan on doing...
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    LB7 into 2001 suburban complications

    Looking for a little guidance on a 2004 LB7 into a 2001 2500 Suburban. I have the motor, and have sourced a wiring harness out of a 2003. I need an Allison as my tranny is a 4l80/5 E , what year Allison will work with my 04 Dmax? Also, are the main harnesses year specific or does 03+ up...
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