Ftruck150

Just browsing Ford's site looking at stuff when I noticed that the F650 and F750 only come with a v10 or a cummins diesel.

Why would ford not use their own 6.7 diesel rather than a cummins in these big trucks?


Also noticed that the 6.7 powerstroke advertised in the 250-350 superduties is rated at 400hp and 800ft lbs, while the same(?) 6.7 powerstroke advertised in the chassis+cab configurations(450-550?) in the commercial section, is rated at 300 hp and 660ft lbs.

What gives ?

Bass3006

Also noticed that the 6.7 powerstroke advertised in the 250-350 superduties is rated at 400hp and 800ft lbs, while the same(?) 6.7 powerstroke advertised in the chassis+cab configurations(450-550?) in the commercial section, is rated at 300 hp and 660ft lbs.

What gives ?[/QUOTE]

I suspect that is because the likelyhood of the chassis cab trucks of running loaded is greater than in the 250/350s. (I know it doesn't right at first) I think the 6.2L is rated slightly less in the superduty than it is in the raptor.
The explaination I heard was it gives it greater long term reliability when working under heavy loads.

jcain

Duty cycle. Longevity. Also, the c&c 6.7s don't share the same turbo as the 250/350s

Suzuki14258

The 2015 is supposed to have the 6.7 but I sure am glad my 650 has the cummins.

Earlsays

iTrader: (1)

So, why can ford use the cummins in the 650/750, and not in the 250/350/450/550 ?? Same question for the CAT motors they use in the larger trucks, why not in the 250-550, seems silly, especially with all the 6.0/6.4 problems that they dealt with