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2014 F-550 6.8l V10 CNG conversion using 2017 F-350 6.8l V10 for parts

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Old Jan 7, 2026 | 09:09 AM
  #1  
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2014 F-550 6.8l V10 CNG conversion using 2017 F-350 6.8l V10 for parts

Can anyone tell me if using a 2017 F-350 v10 will be compatible with doing a CNG removal from my 2014 6.8L V10. I can use the fuel tank, fuel lines. My question is will the fuel rail, injectors and ECM be compatible for my project. Thank you
 
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Old Jan 8, 2026 | 11:21 PM
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So . . . you're trying to put the 2017 gas engine into the 2014 vehicle?

Should be able to with little issue except the PCM.

Is there anything wrong with the 2014 engine?
 
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Old Jan 9, 2026 | 06:51 AM
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Well actually the 2017 has 170000 miles on it while the 2014 CNG has only 18000. My plan is to use the 2017 fuel system, intake and ECM. and put it on my almost new 2014 engine. I bought a salvage E450 cutaway to use on the conversion. Cross your fingers this works. As the project moves on I will provide updates. The CNG system was installed by BAF out of Dallas Texas and the tanks expired.


 
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Old Jan 9, 2026 | 08:45 AM
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Are you sure you bought a 2017 F-350 with v10? The last year that a v10 was in an F-350 was 2010
 
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Old Jan 10, 2026 | 04:19 AM
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Ford's last year for its workhorse 6.8L Triton V10 engine was 2021 , though it was phased out of consumer trucks earlier (around 2019) and continued in commercial applications like school buses until then
 
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Old Jan 11, 2026 | 12:40 AM
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Was the CNG engine in a shuttle bus that worked the airport?
 
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Old Jan 11, 2026 | 05:01 AM
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The CNG truck is a service truck from the Washington DC water district. It only has 18000 miles on it and looks almost new. I am currently pursuing a wrecked 2017 F350 minibus for [arts as it is cheaper than sourcing the parts need separately.
 
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Old Jan 12, 2026 | 06:23 AM
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18000,road miles , but are you able to view running hours? the total number of hours it idled away.
 
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Old Jan 13, 2026 | 10:38 PM
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Originally Posted by charlie g
18000,road miles , but are you able to view running hours? the total number of hours it idled away.
Was thinking the exact same thing, especially in DC winters when they wanted to stay warm.
 
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Old Jan 14, 2026 | 01:30 AM
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or while it was idled up to power unboard gear so taking a very wild bet the hours will be over 100k in run time
 
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Old Feb 12, 2026 | 11:49 AM
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I am not sure of the run hours but either way I am going to convert it. I went to the local Ford dealer and they don't have a clue. I bought a fuel rail w/ injectors and harness and am looking at a fuel tank from an 06 F350. Aft rear axle. I believe it will fit. Does anyone have thoughts on that? I also plan to replace the ECM with one from a V10 gas job. Project is moving along.
 
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Old Feb 12, 2026 | 10:16 PM
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Yeah, the behind-the-axle tank is fine. Hopefully you have a service manual for it, so you can figure out all of the surprises!
 
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