12.7 to 14 litre

Discussion in 'Trucks [ Eighteen Wheelers ]' started by 86coe, Nov 8, 2019.

  1. blairandgretchen

    blairandgretchen Road Train Member

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    I did exactly that - BW turbo, Full tilt manifold and a tune - runs a lot better now.

    I still like the N14 better, but it did improve performance.
     
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  3. nikmirbre

    nikmirbre Road Train Member

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    Concord,NC
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    Do you have to have facebook to view it? It'd be good to look at and gain some knowledge for myself.
     
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  4. little cat 500

    little cat 500 Road Train Member

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    Abbottstown PA
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    14 liter will stomp a mud hole in a 12.7 and yes there are some dd4 14liters
     
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  5. benjamin260_6

    benjamin260_6 Medium Load Member

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    Ontario, Canada
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    The best place to start is with a 14L HK DDEC 4.

    If that's not possible (because they're extremely rare), and you want to build huge power, the best best thing is to take a DDEC 5 block, crank, rods, pistons and put a DDEC 3/4 head on it with a DDEC 4 ECM. Then you can use the larger N2 injectors and, if you want, a marine cam.
     
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  6. starmac

    starmac Road Train Member

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    Fairbanks Ak
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    Is there a good site on building detroits anywhere? I have looked and never found much info.
     
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  7. benjamin260_6

    benjamin260_6 Medium Load Member

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    Not that I'm aware of
     
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  8. Rideandrepair

    Rideandrepair Road Train Member

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    That’s what I’m thinking, why not add the wristpin Oiler tubes when it’s OH. Whatever’s involved, can’t be much.
     
  9. 86coe

    86coe Bobtail Member

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    Jan 26, 2018
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    Don't think mine is drilled for piston Oilers since it's a 96 model
     
  10. 86coe

    86coe Bobtail Member

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    I was thinking about 750 to 800 horse to the ground. Can't do that reliably without piston Oilers and run it every day. I know for a fact that I can make 750 reliably from a 14 litre electronic engine with a good tuner and the right combination of parts if I did over 600hp and 2000tq with a 79 model big cam 1 and worked it every day.
     
  11. 86coe

    86coe Bobtail Member

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    Jan 26, 2018
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    Anyone know if 14 litre intake, exhaust, and injector roller setup will work on a 12.7? Im going to throw a cam and injectors in my 12.7 and need rollers since I've got 1 bad and the rest have a lot of wear on them. I've got a 14 litre close by that was wrecked I could get parts from if they would work
     
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