12.7 Horsepower increase

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by LB9900i, Apr 8, 2020.

  1. LB9900i

    LB9900i Bobtail Member

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    Apr 8, 2020
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    Hello everyone, I'm new to this site. Honestly not sure if I'm at the right place. I've read a lot of good communication going back and forth on increasing horsepower/torque and must say I've learned a lot even after being in the mechanic field 30+ years. I'm looking for some advise. I have a 2000 12.7 430/470 at all factory settings. The engine is a 6067MK60 with 4912 Cam and 6977 injectors. The truck has 1.2 million miles and has had nothing but a head gasket at 700,000. I'm planning to do an in frame in the near future as I think I'm running on borrowed time. When I do this, I'd like to up horsepower/torque. I'm already going to be replacing sleeves/pistons/injectors/turbo, etc. so why not get what I want. I realize I also need a tune and was looking for opinions on the different types. Meaning, some guys have you send them your ecm, others send a kit with a down load in it that can be captured it your ecm fails(so I'm told). Which is better?? I'm looking for 550-600 wheel hp and 1800-2000 torque. Is that possible? and what injectors would be best? Already planning on a 171702 turbo. I'd rather not change the cam unless I find it worn when I get into it.
     
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  3. Banker

    Banker Road Train Member

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    I have a 96 Series 60 in a glider. After about a year of ownership I put a Pittsburgh Power Box on it. I am happy with its performance when loaded pulling hills. From what I can tell the Bully Dog is very similar. The power box can be installed in an hour or so and each of its 7 settings are an additional 25HP. Since you are a mechanic I would call Pittsburgh Power and ask to talk to an engineer about possibly purchasing one. You will be able to ask specific questions to them and they are very helpful. I just looked on their website and the Power Boxes are not still there.
     
    Last edited: Apr 8, 2020
    BoxCarKidd Thanks this.
  4. LB9900i

    LB9900i Bobtail Member

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    Apr 8, 2020
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    Banker, did you put the box on without making any parts changes?
     
  5. Banker

    Banker Road Train Member

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    No parts changes were required for mine, I think they recommend a slightly larger turbo.
     
  6. Banker

    Banker Road Train Member

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    I already had a few HP upgrades before the box was installed.
     
  7. mtntopbound

    mtntopbound Bobtail Member

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    Sep 9, 2019
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    A tune would be a better option. I have personally used serious 60 performance, but there are others as well. Very pleased with results.
     
  8. LB9900i

    LB9900i Bobtail Member

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    Apr 8, 2020
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    Any idea what you're getting? HP/torque? I know I need a tune, but I want to make sure I've got the right parts for the tune and it stays together. And I know the parts I need depends on what tune I want. I'm just looking for advise on what others have done. What worked, what didn't work. Seen a few comments about engine smoking at startup with 15/1 pistons with a tune, but 15/1 pistons can generate more power with increased boost. 550-600 and 1800-2000 is what I'm after.
     
  9. mtntopbound

    mtntopbound Bobtail Member

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    Everyone will have a little different opinion. I have 16.5-1 pistons 5915 injectors,stock 500hp cam 171702 turbo. 600 hp tune from ss60 performance and it puts a smile on my face. Been tuned for 2 1/2 years and no problems. Egt’s not crazy,Pulls very strong, doesn’t smoke unless you drive it hard, fuel mileage in the upper 7s in my operation with conventional truck.
     
  10. LB9900i

    LB9900i Bobtail Member

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    Apr 8, 2020
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    mtntopbound, that sounds just like what I'm looking for. I'm assuming your cam is not the 4912 and your block probably has piston cooling nozzles. Don't think mine does but they can be added.
     
  11. mtntopbound

    mtntopbound Bobtail Member

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    Sep 9, 2019
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    I’ll have to check on cam, not sure, but I have a ddec 3 block no piston coolers.
     
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