Gears for dummies

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Feb 18, 2017 | 07:35 PM

44Dan44

Thread Starter

More Turbo

Joined: Feb 2017

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From: Quad Cities Illinois

Gears for dummies

Hi, it's me that's the dummy

I'm working up a build and I wonder if anyone could help with the Why of selecting the available gear ratio choices.

I'm sure others might not know so general info is helpful but in my case...
F350 4x4 Crew Cab DRW that is not destined to tow anything.

Thanks in advance.

Feb 18, 2017 | 07:47 PM

K A M

Senior User

Joined: Apr 2005

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I always go the most I can get. On the 250 diesel I went with the 3.55:1 ratio because the 3.73 is no longer available in the diesel F-250

Feb 18, 2017 | 08:52 PM

skanj0

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Quote:

Originally Posted by K A M

I always go the most I can get. On the 250 diesel I went with the 3.55:1 ratio because the 3.73 is no longer available in the diesel F-250

Same here. Get the 3.55s. Inevitably you will fall for larger tires, or pickup a big trailer, and you will be thankful you got the lower gear. On my 06 I changed from 3.73s to 4.10s when I went to 295/65/20s. I have the same size tire on my 16, and I am glad I got the 3.55s. Luckily the 6.7 has enough torque for it.

Feb 18, 2017 | 11:15 PM

DeputyDiesel

Tuned

Joined: Sep 2016

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This is a great calculator I've used for tire swap gear ratios.
https://tiresize.com/gear-ratio-calculator/

Feb 19, 2017 | 07:23 PM

bronc71

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Joined: Sep 2016

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From: northern ontario

Quote:

Originally Posted by 44Dan44

Hi, it's me that's the dummy

If I'm reading this right your looking at a drw and everyone is giving you advice on a srw? Maybe I'm wrong but if your going drw you have 2 gear choices 3:55 and 4:10. Now you say your not towing anything (not sure why the drw ?) if this is the case go with the 3.55 and get the advantage of better mpg

Feb 19, 2017 | 07:26 PM

Rasty1

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Joined: Aug 2016

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I guess my question is the same as bronc71, why the drw if you intend not to tow?

Feb 19, 2017 | 07:40 PM

44Dan44

Thread Starter

More Turbo

Joined: Feb 2017

Posts: 538

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From: Quad Cities Illinois

Quote:

Originally Posted by bronc71

When using Build & Price on Ford website 3:55, 3:73, and 4:10 are offered, also a limited slip version for each.

Reason for DRW is I want the 8 foot bed and I think the long bed crew cab looks a little weird unless it's lifted with different wheels/ tires which I don't want to do. I can fit the truck easily in garage for length and width but don't have much to play with for height. So short answer, I like how it looks.