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Detroit 12.7 with 14l Head

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Detroit series60, Dec 9, 2020.

  1. Dec 9, 2020 #1
    Detroit series60

    Detroit series60 Bobtail Member

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    Dec 9, 2020
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    Hello I am going to do an overhaul on my 12.7 series 60 Detroit and I have a remanufactured (less than 20k miles) Detroit s60 14 liter head laying around. So can I put the reman 14L (ddec5 ) head on the 12.7L (ddec4)engine. I heard that it will bolt up but I would have to use : 12.7 camshaft, 12.7 rockers, 12.7 jakes, the 14L injectors.
    Can anyone tell me if this seems right? I’m assuming I would adjust the overhead based on the 12.7 specs? Also if I use the 14L injectors will it work with the 12.7 DDEC 4 ecm. If it will work do I just cut the connector off the 14L injector harness and solder them to the original 12.7 injector harness ? Btw the 12.7 is non egr and the 14L head is egr
     
    Last edited: Dec 9, 2020
    Detroit series60, Dec 9, 2020
    Detroit series60, Dec 9, 2020
    #1
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  3. Dec 9, 2020 #2
    little cat 500

    little cat 500 Road Train Member

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    im not 100% sure but i dont think the injectors will work with the dd4 ecm as far as bolting the head on yes it will fit the 14 liter rockers and jakes should works fine use the 12 cam
     
    little cat 500, Dec 9, 2020
    little cat 500, Dec 9, 2020
    #2
    ibcalm19 Thanks this.
  4. Dec 9, 2020 #3
    Detroit series60

    Detroit series60 Bobtail Member

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    Dec 9, 2020
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    Ok thanks , I wonder do I have to change the whole ecm or what other options do I have
     
    Detroit series60, Dec 9, 2020
    Detroit series60, Dec 9, 2020
    #3
  5. Dec 10, 2020 #4
    ibcalm19

    ibcalm19 Road Train Member

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    I just read your post on the n3 injector with the dec4 ecm. As Little Cat 500 said, I don't know if they will work with the dec4 ecm. If they do I would do the wiring at the injector connector like you have in mind. All the best to you.
     
    ibcalm19, Dec 10, 2020
    ibcalm19, Dec 10, 2020
    #4
    Detroit series60 Thanks this.
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