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Thread: yet another ls swap

  1. #1
    Carb and Points!
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    yet another ls swap

    hey gang,
    been lurking for a while as a guest and decided to join and be a bit more active.
    current project is a 56 pickup with L98, running standalone ls1 loom and cable dual throttle body's. custom water to air intercooler internal in manifold.
    looking at how adaptable the standard P59 ECU is as i have only used aftermarket ecu's in the past for this type of swap.
    looking forward to picking brains.
    cheers Dave

  2. #2
    Super Moderator dave w's Avatar
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    Can you share a few Pics of the 56 Pickup with the L98?

    dave w

  3. #3
    Carb and Points!
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    Quote Originally Posted by dave w View Post


    Can you share a few Pics of the 56 Pickup with the L98?

    dave w

    Far from ready for the road. but progress is progress.

  4. #4
    Super Moderator dave w's Avatar
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    Is the L98 58x crank trigger and 4x cam trigger?

    dave w

  5. #5
    Carb and Points!
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    not 100% sure? it was running in car before i got it as salvaged vehicle. he had fitted the 6.0lt block and 5.7 accessories. so could have changed the tone wheels or re programmed? need to get a cable to pull the ecu info and see whats programmed. also need to put a new program in that has 2 bar map and remove vats. it also was running the maf. so will have to hunt around for a bin that will get me up and running b4 i do any real tuning.

  6. #6
    Super Moderator dave w's Avatar
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    I'm not familiar with the P59 ECU.

    For a LSx engine using the 24x crank trigger and 1x cam trigger the factory LS1b computer (aka 12200411) is well supported by the aftermarket.

    For a LSx engine using the 58x crank trigger and 4x cam trigger the factory E38 computer is well supported by the aftermarket.

    There is the option to use the Lingenfelter 58x - 24x system: https://www.lingenfelter.com/product...l#.XfB9QOhKiM8

    HP Tuners offers software for factory computer providing tuning parameters on engines using turbos. https://forum.hptuners.com/showthrea...ir-Differences

    dave w

  7. #7
    Carb and Points!
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    thanks that's some good info. l need to get the hardware to pull the info and see what the go is. any recommendations for hardware that can use with multiple software?

  8. #8
    Super Moderator dave w's Avatar
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    If you go with 24x crank / 1x cam triggers, the free LS1 Tuning Software is an option: http://www.gearhead-efi.com/Fuel-Inj...uning-Software

    dave w

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