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 > 4.10 rear in new Ford F350

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dennych1

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Posted: 09/19/19 08:18am Link  |  Quote  |  Print  |  Notify Moderator

A lot of leftovers have the 4.10 rear any one know if there would be a big difference in MPG towing or would it be negligible..?

ACZL

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Posted: 09/19/19 09:05am Link  |  Quote  |  Print  |  Notify Moderator

The heavier the right foot is, less MPG's you'll get. 4.10 gears are not noted to be MPG champs, but offer great pulling power and get you going better from a dead stop better as well. Personally, I'd prefer 3.73's, but truck was an off the lot purchase so it is what it is. previous truck had 3.55 gears and wasn't bad, but in hills the 4.10's shine. FWIW tho, running same speeds, only lost 1/2 mpg between the 2 and gained about 1,000 lbs in truck weight. IMO, a wash.


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Posted: 09/19/19 10:14am Link  |  Quote  |  Print  |  Notify Moderator

For doing truck things, I would always go with more gear.

In a 1 ton truck, the difference in mpg would be negligible. You may even gain mileage towing.


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time2roll

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Posted: 09/19/19 10:32am Link  |  Quote  |  Print  |  Notify Moderator

dennych1 wrote:

A lot of leftovers have the 4.10 rear any one know if there would be a big difference in MPG towing or would it be negligible..?
Vs what? 4.10 towing is probably better mpg towing than 3.55/3.73
Go 4.30 if you see one.

Not a huge difference either way with the new transmissions with more gears with less space between shifts.


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Lynnmor

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Posted: 09/19/19 11:24am Link  |  Quote  |  Print  |  Notify Moderator

Gas or diesel, single or dual? You do know that the top two gears are overdrive and many people are stuck in the distant past when discussing gear ratios?





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Posted: 09/19/19 11:31am Link  |  Quote  |  Print  |  Notify Moderator

4.10’a are the way to go. Probably a bit better mileage towing.


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Posted: 09/19/19 11:35am Link  |  Quote  |  Print  |  Notify Moderator

Since you are looking at a 4.10, you are looking at a dually. I have 4.10 in mine, very happy. I am pulling right at 16K and live in the mountains of east TN. The 4.10 keeps you in the right spot on the RPM's when towing. Has good get up when pulling on interstate. Milage when towing is 9-10 and 16 unloaded. You only other option with a dually is 3.55's. From what I have read there isn't a big difference in milage between the two.


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Posted: 09/19/19 02:25pm Link  |  Quote  |  Print  |  Notify Moderator

Gas or diesel and towing what?


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dennych1

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Posted: 09/19/19 03:31pm Link  |  Quote  |  Print  |  Notify Moderator

Looking at 2019 Ford dually f350. I would be towing occasionally but carrying a 5500 lbs truck camper

Lynnmor

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Posted: 09/19/19 04:01pm Link  |  Quote  |  Print  |  Notify Moderator

OK, its your secret about fuel. There is a large difference in RPM, and therefore required gear ratios between gas and diesel. Yes, I know that 4.10 is offered with some options, but I ain't looking it up.

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