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Thread: 4.3 vortec swap

  1. #1
    New Member Hatchetman's Avatar
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    Exclamation 4.3 vortec swap

    I have a 1996 s10 blazer with a 4.3 vortec 262 motor. Its been swapped to a remanufactured motor. I am getting a correlation problem, when i come to a stop, the motor will stall. someone told me that i need to re learn the computer, but my efi V2 with the 7.5 software is not compatable. does this sound correct as to the fix, and if so, where can i get the reset done?
    Thanks in advance

  2. #2
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    You need to have a Tech II do the CKP, crank position relearn. Or if you want to actually tune your truck, I would highly recommend doing a 0411 PCM swap (fullsize truck, F-body, Vette from 99-02) as it is a much better PCM than the 96-98 (and 99-00) BlackBox PCM.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  3. #3
    New Member Hatchetman's Avatar
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    Thank you so much for your quick reply. I was hoping to tune the truck as it has a hotcam, aluminum gaskets, and all new parts. Does that pcm swap in with no hassle? i mean is it just a swap of the main computer console or is there more involved?
    Thanks again

  4. #4
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    Yes, I would PM member Lextech as he has all the wiring diagrams setup already! It is a little more involved, other members have reported it takes a few hours (4-6ish) to re-pin the 96 harness for a LS1 PCM connector.

    Check this thread out: 0411 PCM swap information

    You swap the PCM from your 96 one to one you can easily find in the junkyard or online for less than $100. Buy EFILive and license it, then tune it just like you would a regular LS1! Plus you can run any of the free Custom OSs EFILive offers (ie for big cams, FI, N2O, etc).
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  5. #5
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    Let me know how it goes with the installer.
    Cal Editor aka A.J.
    Lead Calibrator at PCM Calibrators
    ASE Master Certified since 1988 -- ASE L1, F1 & A9
    GM Technician since 1999 -- GM World Class Technician since 2009
    CNG Installer -- CSA Inspector
    A handful of people out there who do have an intimate knowledge of GM Calibrations

  6. #6
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    I have your wing nut
    Cal Editor aka A.J.
    Lead Calibrator at PCM Calibrators
    ASE Master Certified since 1988 -- ASE L1, F1 & A9
    GM Technician since 1999 -- GM World Class Technician since 2009
    CNG Installer -- CSA Inspector
    A handful of people out there who do have an intimate knowledge of GM Calibrations

  7. #7
    New Member Hatchetman's Avatar
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    LOL yes you do, i will be by the dealership in the am to get it on my way out to the installer, i dont know the sites regs on posting addresses, but if your curious you can find crossroads speed equipment, somewhere outside charlotte, his resume is very impressive. and the hardware he sold me (reman motor) itself is in great shape. Ill let you know for sure. here is a pic before it was installed,



    # Starting at $995.00 ***MY PRICE 870 +install + battery +starter + cam sensor +other sensor (i forgot) +hotcam total was 2188.04

    # Completely rebuilt including the following:

    # Heads reconditioned(including resurfacing if needed)
    # Block cleaned and bored
    # Crank turned or polished
    # Fully assembled (including intake and tin in many cases)

    # Parts used:
    # Federal Mogul Main & Rod Brgs.
    # Durabond Cam Brgs.
    # Sealed Power Pistons
    # Hastings Rings
    # Melling oil pump and Timing Set
    # Fel-Pro Gaskets

    The valve covers that were attached here were not mine, and are not installed, still having some computer issues but the motor seems great. will update as it develops
    Last edited by Hatchetman; March 8th, 2010 at 05:22 PM. Reason: added info

  8. #8
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    I can alway get you a tune that will work in the current PCM.
    Cal Editor aka A.J.
    Lead Calibrator at PCM Calibrators
    ASE Master Certified since 1988 -- ASE L1, F1 & A9
    GM Technician since 1999 -- GM World Class Technician since 2009
    CNG Installer -- CSA Inspector
    A handful of people out there who do have an intimate knowledge of GM Calibrations

  9. #9
    New Member Hatchetman's Avatar
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    On my way there now. Ill ask about it in person. Thanks!

  10. #10
    New Member Hatchetman's Avatar
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    After a full tuneup, and some maintenance we are still receiving error p0300 Random Cyl Misfire. The spyder injection kit has been replaced, the distributor cap has been replaced, the catalytic converter has been replaced and the motor runs fine, just sitting at idle for 15 mins and the error will come. Still working, any ideas let me know, Thanks guys

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