2018 10 Speed Auto which axle ratio?
11-06-2018, 07:14 PM
#11
Senior Member
you would have to do the math,but with a 10 speed trans it is easy to compensate as needed. When it comes time for me to tow (i have a 3.15 ) i can just downshift a gear and be in the right rpm range.
Last edited by cobrascott; 11-06-2018 at 10:05 PM.
11-06-2018, 07:29 PM
#12
Senior Member
I had two 2018 5.0's, one had 3.55, and my current truck has 3.31. Go with the 3.55, it's the perfect all around gear ratio for the 5.0, on the 3.5 Ecoboost I would go 3.31 since that motor makes lots of torque down low.
11-06-2018, 07:37 PM
#13
Senior Member
3:73 preferred, but nothing any higher than a 3:55, and I don't care which transmission it has, or motor for that matter.
Last edited by JCR 56; 11-06-2018 at 07:39 PM.
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farmall856 (12-13-2020)
11-07-2018, 02:18 AM
#14
With the 10-speed you can't really go wrong with any ratio. I ended up with the 3.15 because I don't really tow but maybe twice a year and it's no where near the capacity the truck is capable of. I get 20mpg city all the time (hand calculated). TFLTruck just did a video where a 2018 F150 XLT 2wd with the 5.0 and a 3.15 rear did a drag race against a 2019 Ram with the 5.7 and eTorque (I believe the rear axel was a 3.55) and the F150 smoked it (we also had a weight advantage as well). Here is the video: https://youtu.be/a4Pp9Xrq_Rc
With such a broad spectrum of gears in the 10-speed the F150 is fast no matter what you get (we are lighter than the competition as well). You'd be good with a 3.31 or 3.55 unless you want the bragging rights of the 3.73 but it's over kill for what you stated you use the truck for. Ford did a great job with making the F150 good at everything. Fast with good gas mileage is hard to do but they did it.
With such a broad spectrum of gears in the 10-speed the F150 is fast no matter what you get (we are lighter than the competition as well). You'd be good with a 3.31 or 3.55 unless you want the bragging rights of the 3.73 but it's over kill for what you stated you use the truck for. Ford did a great job with making the F150 good at everything. Fast with good gas mileage is hard to do but they did it.
11-10-2018, 02:22 AM
#15
I have never wanted or thought I needed a higher ratio gear like 3.31 or 3.15 but I always find a need and want for 3.73 or even 4.10.
11-13-2018, 10:55 AM
#16
Junior Member
Nobody I know complains about too much pulling power! Get the 3.73 headset. Friend of mine has 5.0 with 3.73's 2018....gets exceptional fuel mileage and rips pretty good!
