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Thread: New to Forum - Mid - Ohio

  1. #1
    Carb and Points!
    Join Date
    Feb 2020
    Posts
    2

    New to Forum - Mid - Ohio

    Howdy All,

    Needed to Join forum due to project. And I Thank ya all for all the information you have posted. PROJECT - 1992 C3500 original 5.7 NV4500 combo. - Swapping to a 7.4 NV4500 combo.. Just need more torque for the old girl(Dump Truck). Current ECM (5.7) 1228747 - Want to swap in the 7.4 but I have a 16147060 ECM - from RV I guess the 4l80e tranny.. I was going to look at the diagrams and determine if I could just plug in the 7060 or do I need to find the prom for a 8747.. I have all kinds of projects and i'm sure i'd bore ya with those..

    I'll post something more formal if I am unable to find the info I need, but if you went through the same setup or know what I need, please don't hesitate to comment!!

    Thanks in advance
    (WALMKW)

  2. #2
    Administrator
    Join Date
    May 2011
    Location
    Lakes Region, NH
    Age
    50
    Posts
    3,306
    Welcome to the forum. Plenty of folks here have an ongoing list of projects so you're not alone there.

    The 7060 ecm was used with the 7.4 in 91-92 so you could find or burn a prom for that ecm. The 8747 is a little older but may swap. We have information on both pcms so you can compare wire locations for possible plug n play operation.

    http://www.gearhead-efi.com/Fuel-Inj...Information-85

    http://www.gearhead-efi.com/Fuel-Inj...Information-4F

  3. #3
    Carb and Points!
    Join Date
    Feb 2020
    Posts
    2
    Thanks for the welcome!

    Checked the diagrams.. Would have to re-pin harness to work with the 7060 Ecm - So looks like I am looking to reprogram the 8747 Chips.
    I'll keep the 7060 for a different Project. Now to figure how I can get a 8747 chip reprogrammed to the arpa 91 bin.
    Last edited by WalMkw; 02-17-2020 at 07:17 AM.

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