Which is more durable 6.4 or 6.7 Powerstroke?

[Doubletap]

Which engine do you think is more durable, better built?

[CountryAggie]

Depends. Are you gonna run them all stock or tuned/modified?

Tuned, 6.4 hands down... Stock, without question the 6.7...


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[RUFFSTUFF]

Whichever one doesn't break. What a silly question...

[fordpwrstroke7]

I suggest the mods delete or close this thread. It won't end up anywhere positive.

[travisH3]

Deleted -6.4, dpf equipped go with the 6.7. The 6.7's dpf system is tons better than the 6.4 and isn't AS bad on the engine. It still isn't perfect but it does a better job than the 6.4. The 6.4 is a stronger engine wise for more power and if deleting the dpf you will see more gains than you would a 6.7. 6.7 uses urea to clean the exhaust filter while the 6.4 injects fuel on the exhaust stroke to burn the soot out of the dpf. It washes down the cylinder walls and "makes" oil where the 6.7 doesn't have as big of an issue but still with the dpf on it, it is recommended to change oil more frequently in case there is fuel dilution.