Talk to me about bed length and wheelbase...

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dieselBlazer

Rank I

Contributor II

154
California, USA
First Name
Kristoffer
Last Name
Edlund
I currently drive a 1986 diesel K5 and I love it (pics below for fun). Its an animal off road, and with a fridge and stove slide out and solar its very comfortable to camp out of. It cruises happily at 75 mph with a turbo and overdrive manual trans and gets around 16 MPG.

But its really loud, hot in the summer and cold in the winter, and space is limited when taking a large group out for longer trips. I want something quiet and comfortable and better on fuel to use for long highway trips where I dont need serious off road capability. For the huge majority of travel I have done the last few years I have only needed 4 wheel drive in my K5 a few times (white rim, mojave road a couple times, 10-15 death valley trips, Zion, Bryce, Arches, tons of canyoneering in the north wash and the san rafael swell, etc). I hardly ever use the lockers, winch, etc. My friends just dont wheel that hard anymore unfortunately and I'm too chicken to do it solo anymore.

I've decided I want a new Sierra 1500 AT4, with the 3.0 diesel. It'll start as a simple build out similar to my K5. Fridge and stove slide out, water tank, battery and Victron power system, maybe some solar. All under a tonneau cover or maybe a bed cap/shell,. In the future maybe I add an Ovrlnd or GFC-style lightweight camper. The question is what bed length. My skis are 192cm (75.5 in), and with a fridge and stove and stuff bolted down and taking up space one side I would like to put them in straight front to back if possible

The truck comes in either a 69.9" or 79.4" bed, and I think I want the longer one. I'm curious what y'all think about the extra 10" of bed and wheel base for mild to moderate off road use. Hardscrabble on the white rim is likely as hard as I would go with this truck. If there was any "real" technical driving I would just take the K5 instead. My intuition is going from 147.4 to 157" wheel base probably doesn't make much difference, and my K5 is 106.5" so either truck is going to feel like a yacht in comparison anyway.
 

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highboy4x4

Rank V
Member

Enthusiast III

1,872
Naples, FL, USA
First Name
Russ
Last Name
Derr
Member #

32418

Service Branch
Army (ret)
Love the K5. Drove many Army CUCV’s. I drive a ‘14 F350 CCSB 6.5’ bed with a utility topper. Personally I would stay with the shorter bed. Think turn radius.

For me, full size overlanding is more fun! I can carry everything I need for repairs, self recovery, life support and still have room for toys! Sure you can’t do the highly technical routes but I’m ok with that. Check out my build page. Every section is modular and I can remove it all in a day. (Power, water, heat, drawers, topper, etc)
F350 CCSB
 

dieselBlazer

Rank I

Contributor II

154
California, USA
First Name
Kristoffer
Last Name
Edlund
Thanks for the feedback so far.

I love the K5 and am definitely keeping it. But with no soundproofing and no stereo, minimal heat insulation, and an AC system I designed in my backyard its not the most comfortable rig for long highway drives. I do 5-8 hr one way drives on the highway at least one weekend a month and something that gets better MPG and is quieter and more comfortable will be nice.

The consensus sounds like the long bed, which was my thought initially. Begin able to sleep in it or put my skis back there will be really nice.
 
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