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TwinDuro

Well-known member
@phsycle I know the AFM issues are not to be overlooked, but figured I'd share my experience helping my brother buy a newer, lower mileage used truck since it's in the same wheelhouse as some of the trucks you're looking at.

He tows a Grand Design 2600RB travel trailer fairly regularly (29ft long, 5800lbs unloaded, 7800lbs GVWR on the trailer) and was looking at F-150s and Silverado 1500s mainly. He went back and forth between a 1500 and 2500HD truck (a Silverado 2500HD with a 6.0 or a F250 with a 6.2 gasser) but decided that in the end, for his and his significant others uses, a max towing/payload package 1/2 ton made more sense 90% of the time. We then narrowed the hunt for a 2014-up F-150 with the max tow package and either a 3.5L or 5.0L or a Silverado 1500 with the NHT (max tow package) option and either the 5.3 or 6.2 V8.

After a long and exhaustive search, I ended up finding them a 2015 Silverado LT 1500 4x4 double cab with the 5.3, 6-speed auto, NHT/Max Trailering package with all the options they wanted (its definitely not a base model) with 25k miles in the mid $20k range from a dealer in a nearby state. The max towing capacity is 11,000lbs, the max combined trailer/vehicle weight rating is 16,700lbs and the payload is 2,270lbs. It has the 9.6" rear axle with a G80.

I know you don't trailer/tow, but some of the upgrades in the max-towing/payload/trailering packages in both the Ford and Chevy/GMC (I'm not schooled up on the dodges unfortunately) are ideal for someone who spends more time off-pavement: lower gear ratios, slightly heavier springs, heavy duty cooling etc. The tow mirrors are an added plus too. Just something to look into.

So far the truck has worked great for them, rides really nice (despite the heavier springs) and regularly returns 20+ mph highway. One 700 mile round trip I went with them and they broke (just barley) 25mpg unloaded driving 70-75mph, I was impressed.

Lots of options here, so best of luck!
 

Buddha.

Finally in expo white.
At least initially AFM was only in the 1500 series with the 5.3. I don't know if the 6.0 and 8.1 ever got AFM.


Chrysler has a similar feature but I think they call it MDS (Multiple Displacement System) in the 5.7 V8.
I know dodge used their system on their 1500's and HD's but GM never did on thier HD's.
 
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Buddha.

Finally in expo white.
I bought a HD because I needed the ability to tow my 10,000lb 30' long travel trailer across the country and back with a bed full of junk. We were 18k combined weight(truck is rated for 22K I think?). The truck would get 7-8 mpg at that weight, on flat ground. BTW, diesel trucks and ecoboost trucks loaded to the same weight would pass me going up the mountains, but I was still faster than the semi trucks.
I like that I could throw 4-5 people in it and a half ton rated pop up camper in the back and I'd still not be over weight. I like the 36 gallon fuel tank. I like that it doesn't have the AFM or whatever they're calling it now.

OP doesn't need a HD truck, but I wouldn't talk him out of it.
 

verdesard0g

Search and Rescue first responder
I love my 06 dodge 2500 diesel 4x4 that I bought used with 80,000 miles on it. Even though everyone says 06's are the worst for electrical problems I've had none. I get around 20mpg on the highway and about 15 in town or in the dirt. It's got near 200k miles on it now! You can probably find one for way less than the $25,000 I paid for mine 10 years ago.Azul Brute.jpg
 

85_Ranger4x4

Well-known member
Trucks also come with more transmission gears, so you don't need lower gears in the rear end. Look at the 10 speed that Ford and GM use, it eliminates the need for deep gears in the diff.

Highway" gears are actually better for a truck, they have a larger pinion gear. Off set the higher gear ratio with a lower 1st gear and you have a stro ger set up with good low end power and durability.

Some motors, the EcoBoost in particular, have enough low end torque to make gearing unimportant important to most people. Mine has a six speed and 3.15 gears and it has no problems towing.

And yet it is easier to get deeper gears now that it has been for decades. Back in the 80's-90's they were generous if they gave you 3.55's.

Lots of transmission ratios work both ways, when you have 2-3 overdrives a little deeper gear in the axle won't hurt as much on the highway either.

My brother's 3.5 EB has factory 4.10's, that thing snaps to attention right now. And he can still squeak low 20's on the highway.
 

phsycle

Adventurer
And yet it is easier to get deeper gears now that it has been for decades. Back in the 80's-90's they were generous if they gave you 3.55's.

Lots of transmission ratios work both ways, when you have 2-3 overdrives a little deeper gear in the axle won't hurt as much on the highway either.

My brother's 3.5 EB has factory 4.10's, that thing snaps to attention right now. And he can still squeak low 20's on the highway.

I thought 3.73 was the lowest you could go? Or is this a Raptor?
 

85_Ranger4x4

Well-known member
I thought 3.73 was the lowest you could go? Or is this a Raptor?

Tremor:

 
D

Deleted member 9101

Guest
Tremor:


Ohhhh... Those are fun when they are stock...they are evil once you start tinkering with them!
 

XJLI

Adventurer
My brother's 3.5 EB has factory 4.10's, that thing snaps to attention right now. And he can still squeak low 20's on the highway.

The final overdrive gears are still the same, ~.67, in every overdrive from like the 80s til now in the 1/2 tons.
 

85_Ranger4x4

Well-known member
The final overdrive gears are still the same, ~.67, in every overdrive from like the 80s til now in the 1/2 tons.

The Ford 10 speed also has .8536 and .6892 overdrives for a total of 3 overdrives.

Compared to my 4 speed where if you are not in OD it is 1:1 in third.

My brother's truck with a 6 speed auto has two overdrives.
 

XJLI

Adventurer
The Ford 10 speed also has .8536 and .6892 overdrives for a total of 3 overdrives.

Compared to my 4 speed where if you are not in OD it is 1:1 in third.

My brother's truck with a 6 speed auto has two overdrives.

Yea, true. I was thinking about the final gear for "best MPG" scenarios, but the multiple ODs is killer for towing, hauling and whatever.
 

billiebob

Well-known member
Yea, true. I was thinking about the final gear for "best MPG" scenarios, but the multiple ODs is killer for towing, hauling and whatever.
most trucks have a tow mode that works fabulous regardless of the double/triple overdrive ratios.
 

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