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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis SPONSORED BY:

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Old 12-07-2006, 06:56 AM
powerdog powerdog is offline
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6.4L tq vs 6.4L Maxforce 7 in the International trucks

It is funny the 6.4L Maxforce in the int. trucks has a peak tq rating at 1400RPM’s vs. the 6.4l tt in the super duty at 2000RPM’s. This tells me that ford chooses to keep max tq at close to 2000rpm’s for drive train durability or for better performance.
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Old 12-07-2006, 07:56 AM
origcharger origcharger is offline
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Yes, they did that on the 6.0/VT365 also. It leads many to falsely believe that the peak torque is at 2,000 becuase its a V8 and incapable of producing low end torque similar or better than an inline engine.
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Old 12-07-2006, 08:06 PM
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I read somewhere that the 6.4 maxxforce only uses 1 turbo also. Anyone got the info on that?
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Old 12-08-2006, 12:50 PM
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Quote:
Originally Posted by powerdog
It is funny the 6.4L Maxforce in the int. trucks has a peak tq rating at 1400RPM’s vs. the 6.4l tt in the super duty at 2000RPM’s. This tells me that ford chooses to keep max tq at close to 2000rpm’s for drive train durability or for better performance.
It is a trade off and for the consumer market, everone thinks they need 300+hp in a truck. But in work applications, torque seems to be a lot more important. Witness the high torque low hp formula in all heavy truck and tractor applications.

As for your drivetrain durability point- not so much an issue. Engine manufactures have been limiting torque in lower gears for just that reason for years and maping higher torque in higher gears. So, in theory, they could map around crazy high torque numbers by limiting output in certain ratios.

-Mike
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Old 12-08-2006, 01:10 PM
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Old 12-08-2006, 06:19 PM
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It would be realy great if they would let the customer map thier own torque and HP curves according to each persons needs, or at least let you choose from a few?



Quote:
Originally Posted by IHbase
It is a trade off and for the consumer market, everone thinks they need 300+hp in a truck. But in work applications, torque seems to be a lot more important. Witness the high torque low hp formula in all heavy truck and tractor applications.

As for your drivetrain durability point- not so much an issue. Engine manufactures have been limiting torque in lower gears for just that reason for years and maping higher torque in higher gears. So, in theory, they could map around crazy high torque numbers by limiting output in certain ratios.

-Mike
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Old 12-08-2006, 07:10 PM
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Isn't that what the chips or programmers are supposed to do? I don't know as I've never had one before. If I remember right, on some systems you can choose different levels of power, shift points, etc.
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Old 12-08-2006, 07:10 PM
 
 
 
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64, 64l, engine, force, international, map, max, maxforce, maxxforce, output, torque, truck, turbo, v8, vt365

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