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Grit dog

Black Diamond, WA

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Posted: 12/23/19 11:04am Link  |  Quote  |  Print  |  Notify Moderator

mt-ed wrote:

I've read where some truck campers specify the ratio of gearing in the differential of their trucks used for truck camping. Would anyone out there be so kind so as to explain to me what the advantages/disadvantages are to these different configurations?
Thanks in advance!


Bottom line, if you're "just" hauling a TC on any HD pickup from recent years, the highest gearing offered will haul it fine, even in the mountians.
But the same general gearing rules apply. Apples to apples, a lower final drive ratio will put more torque multiplication down and feel more powerful and typically downshift less in the hills. More so with gassers than diesels.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

BradW

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Posted: 12/23/19 03:09pm Link  |  Quote  |  Print  |  Notify Moderator

All me knows is me loves the 4.10 gears in our 2018 PSD Superdutuy when hauling our camper and towing our jeep.


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Kayteg1

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Posted: 12/23/19 03:48pm Link  |  Quote  |  Print  |  Notify Moderator

BradW wrote:

All me knows is me loves the 4.10 gears in our 2018 PSD Superdutuy when hauling our camper and towing our jeep.

That statement makes no sense without posting what engine (even better torque) you have?





mbloof

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Posted: 12/23/19 03:55pm Link  |  Quote  |  Print  |  Notify Moderator

Kayteg1 wrote:

BradW wrote:

All me knows is me loves the 4.10 gears in our 2018 PSD Superdutuy when hauling our camper and towing our jeep.

That statement makes no sense without posting what engine (even better torque) you have?


He did: "PSD" = Power Stroke Diesel, 2018 would make it a 6.7L.

IMHO: not the best gears for fuel economy.

- Mark0.

Kayteg1

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Posted: 12/23/19 04:00pm Link  |  Quote  |  Print  |  Notify Moderator

Right, but sounds like he likes the higher rpm engine whining.
I love when I don't hear my 6.7 at 1600 rpm with 3.55 differential.
Don't mind >12 mpg with big camper neither.
Side question. My 6.7 start delivering better mpg once it passed 20,000 miles mark. Did we get better fuels this year, or my engine finally broke-in?

Grit dog

Black Diamond, WA

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Posted: 12/23/19 09:35pm Link  |  Quote  |  Print  |  Notify Moderator

Kayteg1 wrote:

BradW wrote:

All me knows is me loves the 4.10 gears in our 2018 PSD Superdutuy when hauling our camper and towing our jeep.

That statement makes no sense without posting what engine (even better torque) you have?


What are you drinking tonight?

Grit dog

Black Diamond, WA

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Posted: 12/23/19 09:44pm Link  |  Quote  |  Print  |  Notify Moderator

Kayteg1 wrote:

Right, but sounds like he likes the higher rpm engine whining.
I love when I don't hear my 6.7 at 1600 rpm with 3.55 differential.
Don't mind >12 mpg with big camper neither.
Side question. My 6.7 start delivering better mpg once it passed 20,000 miles mark. Did we get better fuels this year, or my engine finally broke-in?


Side question. Can I not be labeled a senior member here if I'm not actually a senior?
Lol

wnjj

Cornelius, Oregon

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Posted: 12/23/19 09:50pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

Side question. Can I not be labeled a senior member here if I'm not actually a senior?
Lol

Maybe the forum software detects when you comment on topics about people cutting through your site, noisy kids, discount passes or golf carts and automatically labels you a senior member.

jaycocreek

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Posted: 12/24/19 06:58am Link  |  Quote  |  Print  |  Notify Moderator

I dunno but back in high school when drag racing for a 1/4 mile,lower gears like 4:10 etc was preferred or atleast it sounded meaner!

My 460 Ford does extremely well with 4:10 gears,never wanting for power with the TC on board.


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Kayteg1

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Posted: 12/24/19 08:42am Link  |  Quote  |  Print  |  Notify Moderator

Having 6000lb of TC and other load, I am racing BMW at green lights with my 3.55 differential.
I loose only becouse Ford made a program who lowers available torque on low gears, or the engine would twist the truck too much.

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