crewmaster1

I have a f150 on order, thought we went up to 3.55 rear end, but have 3.31 on window sticker... planning on 34.5 in tires (the BF KO2s). I tow a boat occasionally. Do you think this gearing will be a huge issue? I don't mind it being a big slower off the line, I'm not drag racing in a towing competition, but functionally will I be screwed?

berty

what size boat are we talking? Also which motor? Tune?


I have 5.0 with 3.55 and 34" and a 91octance performance tune and I feel just a little sluggish.


I say give it a shot, get a tune on her, if its still an issue go for a regear later. If you have the ability to go 3.55 or more now, I would, but not the end of the world if you cant.

crewmaster1

5,000 lb boat
v6 eco
no tune (yet) not sure I want to toast the warranty

build date is 2/2 with window sticker released, I don't think there is any chance in the world of changing rear end now....other than aftermarket...how much does a regear cost?

2015PlatMag

You should be good with the EB. I pull 9k lb boat no issues w 3.55. Re gear was 1500 last time i did one.

Lockelamora

iTrader: (1)

It's not cheap, someone did it and I think it's 2k+, although I could be wrong. I would call the dealer and try to work something out with them, I am sure they can sell your truck just as easy to someone else.

CAPTMEO

I just put 295/60/20 Toyo OC AT2s (34x11.7- 62lbs) with a 5.0 3.31 and I didn't notice that big of a difference from stock. I also haven't seen a loss of MPG. I'm getting over 17 on average.

I had 305/55/20s on my 2012 EB w/3.73 and couldn't average above 15mpg.

berty

If you do the regear yourself you can probably get the parts need for like $350-$500 per axle, likely double it for the labor if you have a shop do it.

ToughFX4

My 2008 (4speed tranny)had 3.73 and doing 75-80 on the interstate I was running higher rpm with bigger tires (2400-2500). So when I bought my 2015 I got 3.31. Now I put a level on it I wanna go with 275/65/20 a 34" tire. I love the 3.31 so far, but wonder what the 34" tires will do to my milage and power. Maybe go with 275/60/20 and call it good, My truck is not a street queen, I bought it to use it.

nd5.4f150

parts are 450 for both. Not just one

ToughFX4

Wow, that's bizarre! Stock tires weigh 43lbs.....you added 19lbs per tire and no milage difference? Hmm