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Thread: Converting 1996 PCM to '98+ or 0411?

  1. #1

    Default Converting 1996 PCM to '98+ or 0411?

    Hey guys,

    I just got the deal of the century (for me anyway) and the only problem is it is a 1996 Vortec Suburban.

    I have been trying to search around for anyone who has converted to a 1998 or otherwise and I seem to be batting zero at this point. She will not be hot-rodded...just want the ability to tune her some.

    Thanks all!
    -Kenny

  2. #2
    Lifetime Member ChipsByAl's Avatar
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    The swap to the 98-99 PCM is not that friendly. I would opt for the 0411 PCM in a heartbeat. Use the 02 operating system for the most capability.
    "Trash that carb and get Injected!"

  3. #3
    Joe (Moderator) joecar's Avatar
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    And the '02 OS (specifically 12212156) will allow you to jump to COS5 if you so wish.

  4. #4
    Lifetime Member Aloicious's Avatar
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    Quote Originally Posted by KAZ MotorSports View Post
    Hey guys,

    I just got the deal of the century (for me anyway) and the only problem is it is a 1996 Vortec Suburban.

    I have been trying to search around for anyone who has converted to a 1998 or otherwise and I seem to be batting zero at this point. She will not be hot-rodded...just want the ability to tune her some.

    Thanks all!
    -Kenny
    I swapped my '96 vortec truck to the 12200411 PCM, and tune with V1. its not that hard, and the 411 is better than the 98 PCMs. check this thread out:
    http://www.pacificp.com/forum/viewtopic.php?t=3240

    Edit- you'll want to use the '02 Express van OS file (from holdencrazy) as a base for your tuning as it ran the same L31 setup as our trucks.
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  5. #5
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    Hey KAZ,

    The 96 to 98 PCM swap is very doable, but won't gain you much of anything, except for tuning software options. I think you would be better off and happier with the 12200411 PCM swap. It can be done by a first timer in about 4 hrs. You will instantly notice smoother idle and crisper/smoother throttle response. PM me your E-Mail address if you want a copy of the wiring file to install the 0411 PCM into your 96. I can also send you a tune to get you started.

    Jeff
    98 GMC RCSB 2WD, Internally stock 305 w/Twin T-3 junkyard Turbos,4L80e,Ramjet intake,42lb.inj., 0411PCM, COS3,4675LBS w/me in it. Best Time on 5 passes-13.01@110

  6. #6

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    Thank you gentlemen!!!!

    Lextech I sent you an email. I also asked you about the wiring for a '98 to 0411. If anyone else here has that it would help me GREATLY on a customers '98 supercharged 383 stroker that is being a pain in my balls!!

    Thanks again guys!
    -Kenny

  7. #7
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    Default Re;

    Reference Materials:

    Main thread is very long, but excellent reading. Known differences and some problems are noted below. Great swap, but just be fully aware.

    Everyone who has done this is very happy with the end result....

    =================================================

    Main Thread:
    http://www.pacificp.com/forum/viewtopic.php?t=3240

    Known Differences:
    http://www.pacificp.com/forum/viewtopic.php?t=7164


    4 Low won't shift:
    http://www.pacificp.com/forum/viewtopic.php?t=6883

    411 Swap begun... 100% COMPLETE
    http://www.pacificp.com/forum/viewtopic.php?t=7131

    =================================================

  8. #8
    Lifetime Member Aloicious's Avatar
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    Quote Originally Posted by 97K15004WD View Post
    Reference Materials:

    Main thread is very long, but excellent reading. Known differences and some problems are noted below. Great swap, but just be fully aware.

    Everyone who has done this is very happy with the end result....

    =================================================

    Main Thread:
    http://www.pacificp.com/forum/viewtopic.php?t=3240

    Known Differences:
    http://www.pacificp.com/forum/viewtopic.php?t=7164


    4 Low won't shift:
    http://www.pacificp.com/forum/viewtopic.php?t=6883

    411 Swap begun... 100% COMPLETE
    http://www.pacificp.com/forum/viewtopic.php?t=7131

    =================================================

    the 4Lo issue has been fixed http://www.pacificp.com/forum/viewtopic.php?t=7157
    Edit - possible issues with COS and 4Lo still, see thread for details.

    also, the EGR issue I was talking about in the 100% complete thread has been fixed also, see the main thread for info on it.
    Last edited by Aloicious; May 3rd, 2008 at 01:18 PM.
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  9. #9

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    Hey Jeff,

    I got the files sir! THANK YOU!!

    I owe you a beer or 10 if you are ever in the CO Springs area.

    This is going to sound like an idiotic question, but after looking through some of the threads and seeing your motors photos...it looks like you are running individual injectors and a ram-jet style intake plenum. Is this required for the 0411 PCM or will the 0411 run the Vortec Spider injection system?

    Also thank you to all who responded to my request for information. GREAT READING!

    -Kenny

  10. #10
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    Hey KAZ,

    The 0411 will run the stock poppets just fine!

    Jeff
    98 GMC RCSB 2WD, Internally stock 305 w/Twin T-3 junkyard Turbos,4L80e,Ramjet intake,42lb.inj., 0411PCM, COS3,4675LBS w/me in it. Best Time on 5 passes-13.01@110

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