How much can the 6F55 transmission handle?

13813 Views 6 Replies 6 Participants Last post by Oreo, Mar 17, 2017

EcoBoosted

Discussion Starter · Jun 10, 2016

I am interested in seeing what a tune can do in a Fusion Sport as the current performance 93 octane tunes for a F-150 with 2.7TT sees gains of 60HP and 100ft/lb torque at peak levels but does anyone know how much torque the 6F55 transmission can take. I read that the transmission was fortified but I worry that at the current 380ft/lb being listed by Ford (or 400 ft/lbs in the Lincoln counterpart MKZ using the 3.0TT engine - both using what I assume is the same 6 speed) that there may not be much left with causing damage. I hope that Ford has made this transmission capable enough that we may be able to use a nearly 500ft/lb Fusion - this would be a beast of a car that no one would ever see coming>

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My only reference to the transmission being used in the Fusion was posted by MotorTrend in their 2017 Ford Fusion First Look review.

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escape

· #2 · Jun 10, 2016

And the other related question is: how much can the AWD system handle?

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Drof

· #3 · Jun 10, 2016

All of this is definitely very important, the trans, the awd system, and the axles.

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Fallout4

· #4 · Jun 12, 2016

Dunno what the max torque the 6F55 transmission can take but I assume tuners will take this into account.

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effin_dead_again

· #5 · Jun 17, 2016

This is why I'll probably wait a year or two before I consider a tune to let everyone else crater their drivetrains. I remember the sorry transmission in my old '93 Taurus SHO as well as the made-of-glass drivetrain in the 2012 Hyundai Genesis Coupe 3.8 Track Edition. The sounds that torsen rear diff made toward the end.... :crying:

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Oreo

· #6 · Mar 17, 2017

Well I have been looking for a solid spec but haven't found one yet. But, if we follow Fords normal transmission nomenclature what we have is:

6 = 6 Speed
F = FWD
55 = 550 Newton-Meters or 405 ft-lbs of torque (downstream side of the torque converter)

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Oreo

· #7 · Mar 17, 2017

DaveE said:
400 is good for 12's I'd say.

Yes Sir I believe so.

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