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  1. Where do I send my wiring harness for the modification service?

    Diesel Conversion Specialists

    760 Airport Road SW

    Hutchinson, MN 55350

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  2. What do I need to send in for my wiring harness to be modified?*

    1989 - 1998 12v Cummins Conversion – Conversion truck’s engine wiring harness.  94-98 Cummins Fuel Shut Down Solenoid Plug.

    1998.5 – 2002 24V Cummins Conversion – Conversion truck’s engine wiring harness, Cummins engine wiring harness and Harness between PCM and Fuse Block.

    2003 – 2005 Commonrail Cummins Conversion – Conversion truck’s engine wiring harness and Cummins engine wiring harness.

    2006 + Commonrail Cummins Conversion – Conversion truck’s engine wiring harness, Cummins engine wiring harness, (ECM, SKIM module, and TIPM module and wiring may be required depending on desired tuning)

    Download a wiring work order form here

    *Currently Diesel Conversion Specialists® only offers wire har

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  3. What do I need to save from my Ford engine for the conversion?

    460 gas engine – Engine Oil Pressure sensor, Coolant Temperature sensor

    5.4/v10 Gas engines - Engine Oil Pressure sensor, Coolant Temperature sensor

    7.3 IDI - Engine Oil Pressure sensor, Coolant Temperature sensor

    7.3 Powerstroke - Engine Oil Pressure sensor, Coolant Temperature sensor and Alternator if planning to use the Ford Alternator

    6.0 Powerstroke - Engine Oil Pressure sensor, Coolant Temperature sensor, Engine Oil Temperature sensor, Starter, alternator, Tach Sensor(if converting to commonrail Cummins)

    6.4 Powerstroke - Engine Oil Pressure sensor, Coolant Temperature sensor, engine oil temperature sensor, Starter, alternator,  MAP Sensor, Exhaust Temperature Sensors.

    P Sensor.

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  4. What do I need to get with my Cummins Engine for the conversion?

    12v – Long block engine with Turbo, Power-steering pump, AC Compressor (94 and newer), Alternator (If you’re Converting a Gas Powered Ford, or a Non Powerstroke Ford Diesel), Throttle Cable, Downpipe, Fuel Injection System, Fan, Fan Hub, Grid Heat and Air Horn.

    24v – Complete engine with Turbo, ECM & PCM with Engine wiring harness and PCM wiring harness, Power-steering pump, AC Compressor(94 and newer), Alternator(If your Converting a Gas Powered Ford, or a Non Powerstroke Ford Diesel), Throttle Cable, Downpipe, Fuel System, Fan, Fan Hub, Grid Heat and Air Horn, All Sensors.

    Commonrail 24v -Complete engine with Turbo, ECM with Engine wiring harness, Power-steering pump, AC Compressor (94 and newer), Alternator (If you’re Converting a Gas Powered Ford, or a Non Powerstroke Ford Diesel), Throttle Cable, Downpipe,  Fuel System, Fan Hub, Vistronic Fan, Grid Heat, Air Horn, All Sensors and Intake Air Int

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  5. Can I use an engine out of a bus? Freightliner? Generator? What engines work best?

    Although some industrial engines will work with modification and additional parts, we highly recommend staying away from any non-Dodge Cummins engines, especially the electronically controlled engines.  We have found that Dodge Cummins engines are the most “Conversion Friendly”.  Check out our Engine Information page for more information.  If you chose to use an industrial style Cummins engine, be prepared to spend adidtional money on parts and time.

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  6. Are your Diesel ConversionsĀ® engine mounts bolt in replacement?

    Yes, Diesel Conversion Specialists® engine mounts are bolt-in replacement. They come complete with polyurethane isolators and all the mounting hardware. Our mounts actually locate your engine for you. They will set your engine right where it needs to be side-to-side, up-and-down, and front-to-back, taking the guess work of engine positioning. Mounting the Cummins engine in your Ford truck with our mounts is actually easier than putting the Cummins engine back in a Dodge truck and faster than putting the Ford engine back into the truck.

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  7. Can I put a Cummins engine in my truck that had a gas engine in it previously?

    Yes. It’s a bit more work and you will have to buy a few more parts like an intercooler, exhaust, & possibly a diesel radiator.  For automatic transmissions, an OEM diesel torque converter plus you'll also have to get rid of your in-tank fuel pumps.

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  8. Can I use my Ford transmission?

    Yes. Diesel Conversion Specialists® currently makes 15 different Adapter Plates that allow you to bolt a Ford transmission up to a Cummins engine.  Ford transmissions work better in the conversion because they are OEM equipment and well known to be among the best transmissions available.  Even if you don't mind a bit of fabricating to use a lesser transmission be advised; some of the older, 1997 and later, trucks use a cable to drive the speedometer creating another potentially costly hurdle to overcome if you want your factory instrument cluster to work.

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  9. Can I use the stock Ford gauges in my dash?

    Yes. We sell a sensor adapter kit that includes adapters to help you install the stock oil pressure and temperature sensors into the Cummins engine. The stock tachometer will work with our Tach Kit, and we include the instructions to help you get the wires all reconnected to your sensors without modifying the instrument cluster or removing the dash panel. In your 6.0L and 6.4L truck you can also expect your boost gauge to work.

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  10. Can you provide instructions or technical assistance?

    We have detailed instructions and technical assistance for every part we sell. If you buy a complete conversion kit (Or spend a minimum of $1500) you will receive an in depth installation manual plus technical answers to all your conversion related questions. We have done many conversions in our shop and have helped thousands of customers with their trucks.  Now you can put our proven parts, knowledge and experience into converting your truck too.

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