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Thread: 1997 Vortec 4.3 - 5.7

  1. #1
    New Member
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    Smile 1997 Vortec 4.3 - 5.7

    I have a 1997 Chev p/u 4x4 with Vortec 4.3, it has almost 200,000 miles and is finally getting tired. I would like to replace it with 5.7. What components would I need to get along with engine? Will original trans (Auto), radiator ect work. Also what year or years of 5.7 shouuld I look for. I am quite capable of doing all the nut and bolt stuff but need help with compatability issues. Any help would be apreciated.

  2. #2
    Lifetime Member GMPX's Avatar
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    Norm, I don't know about the mechanicals, but the PCM's between the 1997 and 1998- 2000 model was different. So for an easier conversion look for a 1997 model as the donor.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  3. #3
    Lifetime Member hquick's Avatar
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    Put the 5.7L in and swap the PCM to a 99+ 0411.
    Check this website for help.

    http://www.pacificp.com/forum/index....212d921199c46e
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

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