4.10 gear swap

browe28

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Jul 22, 2017
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I have a 2015 f150. It has a 3.31 gears in it. It had 30" tires (265/60/18) I have 33.4 (305/55/20 on now. Lost around 2 to 2.5 mpg. Thinking about swapping to 4.10. Wondering if anyone has done this and what is the out come?



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CobraVic

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Aug 12, 2014
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In for others opinions.. Kinda in your boat. .33's but I have a 2" lift and 3:55's with the E locker. Things a gutless turd everywhere but between 3500-5000.
 

Saleen_1977

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Aug 20, 2015
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291
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Houston
4.56 feels good on the f-150. Even 4.88 can feel well too. at 70mph the rpm's are just under 2500. Im glad they finally came out for gears for the super 8
 

Liftnw8ts

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May 25, 2009
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South Shore Ky
I have a 2016 F150 SC Lariat. 5.0 I had stock 3:31 gears I went to a 35x12.5x20 inch wheel and tire on a Zone 6 inch lift. I was only getting 13 mpg after the lift and tires. The factory wheel and tire weighed 83 lbs each. My new wheel and tires Toyo Open Country RT on 20x10 Fuel Maverick rims weighed 121 lbs each. My gas mileage prior was right at 18 mpg. I went with Yukon 4:56 gears front and rear. Expensive move 2100.00 for the gears and install, but oh what a difference the truck felt awesome and gas mileage improved to 14.8 mpg.
So all in all it is an upgrade that anyone should do if you are gonna put bigger tires and wheels on your ride. Also after getting the truck tuned from 5 star my gas mileage has improved and averaging 16.3 mpg
 

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