4k tow package Drive ratio, cooling and radiator fan percent difference recource/discussion

[RaptorO7]

Ok so the 4k tow offers 3.81:1 rather than the standard 3.61:1.
But the difference is less than 5 percent (4.96)

here is the difference between the the radiator capacity. Here
8.2 vs 8.72. Or 8.7 vs 9.2 fully filled
This is around 6.34%

both have transmission oil coolers.
Even though ford specifies 4k’s get one doesnt mean 2k’s don't.
I think non 4k cooler Here
And i think 4k cooler Here

The reason I'm saying “i think” is because there are 4 on fords parts list a 1.5L a 2.0L another 2.0L for the tremor pack and an unspecified liter amount automatic transmission one. Some say hot weather and normal weather climate maybe they outift different mavericks depending on where they are going to be sent to. Depending on the climate. Also, maybe the 1.5L is only used in the hybrids since the eCVT doesn't need as much cooling as the 8f35 trans. I also could be wrong, the hybrid might not even have a trans cooler at all since all of them say automatic, which doesn't mean ford wouldn't put and auto cooler on a cvt.

The 2.0 liter says for class two trailer towing in the specifications
So im going to speculate mavericks in hot climates get the 4k tow package one even if they have a 2k tow truck.



(Edit) the liter amount may just mean what engine its for since the 2.0 eco can use a 1.5 eco rated trans cooler and still stay cool.

Now the other difference is the radiator fan. It seems like the tremor might have 2 smaller fans.
Here are the two packages of them

Tremor Here. The tremor one 25in in Length meaning “I think” there is two of them.
IF ANY ONE HERE HAS tremor PACK TAKE A PICTURE OF THE radiator FANS. I would like to make sure that im correct.

(Edit this is fx4 and 4K) Here 43in long assembly
(Edit this is just 2k ) Here 33in long assembly


i dont know how much more cooling there is in two 25 in fan assemblys vs one 45in assembly but if anyone wants to have at it they can try. For fx4 vs tremor.

The difference between 4k and 2k is 45in vs 33in

Anyway. I think the biggest reason why standard non 4k have such a low tow rating is because they don't have a trailer brake controller. They only have the 4-pin instead of the 7-pin. Im not saying to void ur warranty by towing 4k pounds with a 2k truck just because you added a brake controller. But i think it should get a few extra hundred pounds safely. Not 4k but i would say around 2200-2600 being conservative.


Ok, this was my summary of this 4k vs non 4k issue that many people wanted answers to. If you have any conflicting evidence please post.

EDIT: After looking at little more at the ford parts website ive concluded the oil trans cooler on the 2k does not run to a radiator while the 4k does. The 2k cooler is larger and most likely gets its cooling from a scoop under the skid plates or it runs to a small radiator somewhere since i cant see the diagram on the 1.5, while the 4k is smaller it runs to a larger radiator in the front of the truck.

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[Iakona]

I have towed about a 2300lb travel trailer on a 1000 mile trip with zero problems then or after the fact. I have a 2023 Lariat Tremor and the only real difference between mine, not all of them but MINE, and a 4k truck is I don't have the upgraded cooling. It has everything else including a brake controller, because I added one, as well as the heavy duty trans cooler and the 3.81 final drive ratio. The shocks and springs are just tuned differently. I do agree with you, depending on other factors, you can safely tow a couple of hundred extra pounds without worry as long as you stay within the GVWR and whatnot.

 

[RaptorO7]

I have towed about a 2300lb travel trailer on a 1000 mile trip with zero problems then or after the fact. I have a 2023 Lariat Tremor and the only real difference between mine, not all of them but MINE, and a 4k truck is I don't have the upgraded cooling. It has everything else including a brake controller, because I added one, as well as the heavy duty trans cooler and the 3.81 final drive ratio. The shocks and springs are just tuned differently. I do agree with you, depending on other factors, you can safely tow a couple of hundred extra pounds without worry as long as you stay within the GVWR and whatnot.

I agree although the tremor does come with the 2.0L trans cooler, the 4k drive ratio, and the twi 4k radiator fans. Which is 3/5 things that make a 4k truck a 4k truck.
Its only missing the 7-pin and the “higher” (6.3%) capacity radiator which is negligible.

 

[Tiger Dude]

There's nothing stopping you from towing a n 80,000 lb semi with your truck other than tearing it up. And the liability of overload when you hit a busload of kids.

Pretty sureyou get different suspension components with 4k.

 

[The Real Maverick]

The 2022 FWD Hybrids tow 3200 lbs pretty darn well.

Hybrids have upsized cooling and the Atkinson engine makes less heat than a turbocharged one.

FWD and No Brake Controller are strongest reasons to rate it 2k.

I added a brake controller, and my FWD only slips starting to pull that from a dead stop on dirt, gravel, or wet pavement.

 

[Cherokee]

There's nothing stopping you from towing a n 80,000 lb semi with your truck other than tearing it up. And the liability of overload when you hit a busload of kids.

Pretty sureyou get different suspension components with 4k.

If it did Ford would advertise that.

 

[RaptorO7]

There's nothing stopping you from towing a n 80,000 lb semi with your truck other than tearing it up. And the liability of overload when you hit a busload of kids.

Pretty sureyou get different suspension components with 4k.

Well thats a huge jump. But yes the 4k does have 25 more lbs stiffer springs and 1in more clearance in the rear but thats about it.

 

[Tbone289]

both have transmission oil coolers.
Even though ford specifies 4k’s get one doesnt mean 2k’s don't.
I think non 4k cooler Here
And i think 4k cooler Here

The 4K package has two transmission oil coolers. Your first link above is the stacked-plate water (coolant) to oil cooler, but it also has an air to oil cooler that the non-4K package lacks. You don't show a link to that one.

EDIT: Just saw your edit... that is correct, and I will try to take pics of the 4K cooler inlet and outlet hoses and the fan this evening.

 

[Gray Goose]

There's nothing stopping you from towing a n 80,000 lb semi with your truck other than tearing it up.

Reminds me of this oldie

 

[Tbone289]

No actually the 4k has a small oil cooler container lookin thing that runs to a large radiator in the front. Rather than the 2k tow that is just a large container thats cooled from the bottom. Im assuming since i cant see the diagram of the 2k one.

Yes, that is what I said. The "small oil cooler container lookin thing" is the stacked plate water to trans oil cooler, and the one at the radiator is the air to trans oil cooler.

 

[The Real Maverick]

Remember:

A Toyota Tundra can tow 150,000 lbs*

*with orbiter tow package

 

[Maverick123]

Reminds me of this oldie

Challenge accepted, gonna try 187 tons with mine when it comes in

 

[RaptorO7]

No?

Yes, that is what I said. The "small oil cooler container lookin thing" is the stacked plate water to trans oil cooler, and the one at the radiator is the air to trans oil cooler. I'm not sure why you said "no" to my reply.

My bad. I think I replied before you typed ur whole comment after you edited it. Ill just delete my comment for less confusion from these edits to edits to edits

 

[The Real Maverick]

And a VW bug can be outfitted with a 5th wheel tow package:

 

[The Real Maverick]

Weren't those '69 - '70 bugs AIR COOLED??!

At the back no less???!

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